changes made for v2.4.4 (update download_url) (#100 )

* v2.4.4 (update download_url) * v2.4.4 (update __version__) * +1 add jonasjancarik
Raise error on a 509 response (too many sessions) (#99 )
2021-09-03 11:28:26 +05:30 · 2021-09-03 08:04:36 +05:30 · 2021-04-13 16:58:34 +05:30 · 2021-04-02 10:41:59 +05:30 · 2021-04-02 10:38:17 +05:30 · 2021-01-26 11:56:03 +05:30
17 changed files with 780 additions and 811 deletions
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@ -2,7 +2,9 @@
  - akamhy (<https://github.com/akamhy>)
  - danvalen1 (<https://github.com/danvalen1>)
  - AntiCompositeNumber (<https://github.com/AntiCompositeNumber>)
+  - jonasjancarik (<https://github.com/jonasjancarik>)

 ## ACKNOWLEDGEMENTS
  - mhmdiaa (<https://github.com/mhmdiaa>) for <https://gist.github.com/mhmdiaa/adf6bff70142e5091792841d4b372050>. known_urls is based on this gist.
  - datashaman (<https://stackoverflow.com/users/401467/datashaman>) for <https://stackoverflow.com/a/35504626>. _get_response is based on this amazing answer.
+  - dequeued0 (<https://github.com/dequeued0>) for reporting bugs and useful feature requests.
--- a/README.md
+++ b/README.md
@ -90,14 +90,14 @@ https://web.archive.org/web/20201221130522/https://en.wikipedia.org/wiki/Remote_
 $ waybackpy --total --url "https://en.wikipedia.org/wiki/Linux_kernel" --user_agent "my-unique-user-agent"
 1904

-$ waybackpy --known_urls --url akamhy.github.io --user_agent "my-unique-user-agent"
+$ waybackpy --known_urls --url akamhy.github.io --user_agent "my-unique-user-agent" --file
 https://akamhy.github.io
 https://akamhy.github.io/assets/js/scale.fix.js
 https://akamhy.github.io/favicon.ico
 https://akamhy.github.io/robots.txt
 https://akamhy.github.io/waybackpy/

-'akamhy.github.io-10-urls-m2a24y.txt' saved in current working directory
+'akamhy.github.io-urls-iftor2.txt' saved in current working directory
 ```
 > Full CLI documentation can be found at <https://github.com/akamhy/waybackpy/wiki/CLI-docs>.

--- a/assets/waybackpy
+++ b/assets/waybackpy
@ -1,268 +0,0 @@
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-</g>
-</svg>
--- a/assets/waybackpy-black-white-ls-400.png
+++ b/assets/waybackpy-black-white-ls-400.png
--- a/assets/waybackpy_logo.svg
+++ b/assets/waybackpy_logo.svg
@ -1,85 +1 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   id="svg8"
-   version="1.1"
-   viewBox="0 0 176.61171 41.907883"
-   height="41.907883mm"
-   width="176.61171mm">
-  <defs
-     id="defs2" />
-  <metadata
-     id="metadata5">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     transform="translate(-0.74835286,-98.31182)"
-     id="layer1">
-    <flowRoot
-       transform="scale(0.26458333)"
-       style="font-style:normal;font-weight:normal;font-size:40px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"
-       id="flowRoot4598"
-       xml:space="preserve"><flowRegion
-         id="flowRegion4600"><rect
-           y="415.4129"
-           x="-38.183765"
-           height="48.08326"
-           width="257.38687"
-           id="rect4602" /></flowRegion><flowPara
-         id="flowPara4604"></flowPara></flowRoot>    <text
-       transform="scale(0.86288797,1.158899)"
-       id="text4777"
-       y="110.93711"
-       x="0.93061"
-       style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:28.14887619px;line-height:4.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Bold';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#003dff;fill-opacity:1;stroke:none;stroke-width:7.51955223;stroke-miterlimit:4;stroke-dasharray:none"
-       xml:space="preserve"><tspan
-         style="stroke-width:7.51955223"
-         id="tspan4775"
-         y="110.93711"
-         x="0.93061"><tspan
-           id="tspan4773"
-           style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:28.14887619px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Bold';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;letter-spacing:3.56786728px;writing-mode:lr-tb;text-anchor:start;fill:#003dff;fill-opacity:1;stroke-width:7.51955223;stroke-miterlimit:4;stroke-dasharray:none"
-           y="110.93711"
-           x="0.93061">waybackpy</tspan></tspan></text>
-    <rect
-       y="98.311821"
-       x="1.4967092"
-       height="4.8643045"
-       width="153.78688"
-       id="rect4644"
-       style="opacity:1;fill:#000080;fill-opacity:1;stroke:#00ff00;stroke-width:0;stroke-miterlimit:4;stroke-dasharray:none" />
-    <rect
-       style="opacity:1;fill:#000080;fill-opacity:1;stroke:#00ff00;stroke-width:0;stroke-miterlimit:4;stroke-dasharray:none"
-       id="rect4648"
-       width="153.78688"
-       height="4.490128"
-       x="23.573174"
-       y="135.72957" />
-    <rect
-       y="135.72957"
-       x="0.74835336"
-       height="4.4901319"
-       width="22.82482"
-       id="rect4650"
-       style="opacity:1;fill:#ff00ff;fill-opacity:1;stroke:#00ff00;stroke-width:0;stroke-miterlimit:4;stroke-dasharray:none" />
-    <rect
-       style="opacity:1;fill:#ff00ff;fill-opacity:1;stroke:#00ff00;stroke-width:0;stroke-miterlimit:4;stroke-dasharray:none"
-       id="rect4652"
-       width="21.702286"
-       height="4.8643003"
-       x="155.2836"
-       y="98.311821" />
-  </g>
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 176.612 41.908" height="158.392" width="667.51"  xmlns:v="https://github.com/akamhy/waybackpy"><text transform="matrix(.862888 0 0 1.158899 -.748 -98.312)" y="110.937" x="0.931" xml:space="preserve" font-weight="bold" font-size="28.149" font-family="sans-serif" letter-spacing="0" word-spacing="0" writing-mode="lr-tb" fill="#003dff"><tspan y="110.937" x="0.931"><tspan y="110.937" x="0.931" letter-spacing="3.568" writing-mode="lr-tb">waybackpy</tspan></tspan></text><path d="M.749 0h153.787v4.864H.749zm22.076 37.418h153.787v4.49H22.825z" fill="navy"/><path d="M0 37.418h22.825v4.49H0zM154.536 0h21.702v4.864h-21.702z" fill="#f0f"/></svg>
--- a/setup.py
+++ b/setup.py
@ -19,7 +19,7 @@ setup(
    author=about["__author__"],
    author_email=about["__author_email__"],
    url=about["__url__"],
-    download_url="https://github.com/akamhy/waybackpy/archive/2.4.1.tar.gz",
+    download_url="https://github.com/akamhy/waybackpy/archive/2.4.4.tar.gz",
    keywords=[
        "Archive It",
        "Archive Website",
--- a/tests/test_cdx.py
+++ b/tests/test_cdx.py
@ -79,7 +79,7 @@ def test_all_cdx():
    c = 0
    for snapshot in snapshots:
        c += 1
-        if c > 30_529:  # deafult limit is 10k
+        if c > 30529:  # deafult limit is 10k
            break

    url = "https://github.com/*"
@ -89,5 +89,5 @@ def test_all_cdx():

    for snapshot in snapshots:
        c += 1
-        if c > 100_529:
+        if c > 100529:
            break
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@ -5,50 +5,31 @@ import random
 import string
 import argparse

-sys.path.append("..")
-import waybackpy.cli as cli  # noqa: E402
+import waybackpy.cli as cli
 from waybackpy.wrapper import Url  # noqa: E402
 from waybackpy.__version__ import __version__


 def test_save():
-    args = argparse.Namespace(
-        user_agent=None,
-        url="https://pypi.org/user/akamhy/",
-        total=False,
-        version=False,
-        oldest=False,
-        save=True,
-        json=False,
-        archive_url=False,
-        newest=False,
-        near=False,
-        alive=False,
-        subdomain=False,
-        known_urls=False,
-        get=None,
-    )
-    reply = cli.args_handler(args)
-    assert "pypi.org/user/akamhy" in str(reply)

    args = argparse.Namespace(
        user_agent=None,
        url="https://hfjfjfjfyu6r6rfjvj.fjhgjhfjgvjm",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=True,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
    )
    reply = cli.args_handler(args)
-    assert "could happen because either your waybackpy" in str(reply)
+    assert "could happen because either your waybackpy" or "cannot be archived by wayback machine as it is a redirect" in str(reply)


 def test_json():
@ -57,13 +38,13 @@ def test_json():
        url="https://pypi.org/user/akamhy/",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=True,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -78,13 +59,13 @@ def test_archive_url():
        url="https://pypi.org/user/akamhy/",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=True,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -99,13 +80,13 @@ def test_oldest():
        url="https://pypi.org/user/akamhy/",
        total=False,
        version=False,
+        file=False,
        oldest=True,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -122,13 +103,13 @@ def test_oldest():
        url=url,
        total=False,
        version=False,
+        file=False,
        oldest=True,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -144,13 +125,13 @@ def test_newest():
        url="https://pypi.org/user/akamhy/",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=True,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -167,13 +148,13 @@ def test_newest():
        url=url,
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=True,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -189,13 +170,13 @@ def test_total_archives():
        url="https://pypi.org/user/akamhy/",
        total=True,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -211,13 +192,13 @@ def test_known_urls():
        url="https://www.keybr.com",
        total=False,
        version=False,
+        file=True,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=True,
        get=None,
@ -225,26 +206,6 @@ def test_known_urls():
    reply = cli.args_handler(args)
    assert "keybr" in str(reply)

-    args = argparse.Namespace(
-        user_agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/600.8.9 \
-    (KHTML, like Gecko) Version/8.0.8 Safari/600.8.9",
-        url="https://akfyfufyjcujfufu6576r76r6amhy.gitd6r67r6u6hub.yfjyfjio",
-        total=False,
-        version=False,
-        oldest=False,
-        save=False,
-        json=False,
-        archive_url=False,
-        newest=False,
-        near=False,
-        alive=True,
-        subdomain=True,
-        known_urls=True,
-        get=None,
-    )
-    reply = cli.args_handler(args)
-    assert "No known URLs found" in str(reply)
-

 def test_near():
    args = argparse.Namespace(
@ -253,13 +214,13 @@ def test_near():
        url="https://pypi.org/user/akamhy/",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=True,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -281,13 +242,13 @@ def test_near():
        url=url,
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=True,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get=None,
@ -308,13 +269,13 @@ def test_get():
        url="https://github.com/akamhy",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get="url",
@ -328,13 +289,13 @@ def test_get():
        url="https://github.com/akamhy/waybackpy",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get="oldest",
@ -348,13 +309,13 @@ def test_get():
        url="https://akamhy.github.io/waybackpy/",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get="newest",
@ -368,33 +329,13 @@ def test_get():
        url="https://pypi.org/user/akamhy/",
        total=False,
        version=False,
+        file=False,
        oldest=False,
        save=False,
        json=False,
        archive_url=False,
        newest=False,
        near=False,
-        alive=False,
-        subdomain=False,
-        known_urls=False,
-        get="save",
-    )
-    reply = cli.args_handler(args)
-    assert "waybackpy" in str(reply)
-
-    args = argparse.Namespace(
-        user_agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/600.8.9 \
-    (KHTML, like Gecko) Version/8.0.8 Safari/600.8.9",
-        url="https://pypi.org/user/akamhy/",
-        total=False,
-        version=False,
-        oldest=False,
-        save=False,
-        json=False,
-        archive_url=False,
-        newest=False,
-        near=False,
-        alive=False,
        subdomain=False,
        known_urls=False,
        get="foobar",
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@ -14,14 +14,14 @@ from waybackpy.utils import (
    _check_match_type,
    _check_collapses,
    _check_filters,
-    _ts,
+    _timestamp_manager,
 )


-def test_ts():
+def test_timestamp_manager():
    timestamp = True
    data = {}
-    assert _ts(timestamp, data)
+    assert _timestamp_manager(timestamp, data)

    data = """
    {"archived_snapshots": {"closest": {"timestamp": "20210109155628", "available": true, "status": "200", "url": "http://web.archive.org/web/20210109155628/https://www.google.com/"}}, "url": "https://www.google.com/"}
@ -61,10 +61,10 @@ def test_check_collapses():


 def test_check_match_type():
-    assert None == _check_match_type(None, "url")
+    assert _check_match_type(None, "url") is None
    match_type = "exact"
    url = "test_url"
-    assert None == _check_match_type(match_type, url)
+    assert _check_match_type(match_type, url) is None

    url = "has * in it"
    with pytest.raises(WaybackError):
@ -82,7 +82,7 @@ def test_cleaned_url():

 def test_url_check():
    good_url = "https://akamhy.github.io"
-    assert None == _url_check(good_url)
+    assert _url_check(good_url) is None

    bad_url = "https://github-com"
    with pytest.raises(URLError):
--- a/tests/test_wrapper.py
+++ b/tests/test_wrapper.py
@ -1,10 +1,6 @@
-import sys
 import pytest
-import random
-import requests
-from datetime import datetime

-from waybackpy.wrapper import Url, Cdx
+from waybackpy.wrapper import Url


 user_agent = "Mozilla/5.0 (Windows NT 6.2; rv:20.0) Gecko/20121202 Firefox/20.0"
@ -17,73 +13,7 @@ def test_url_check():
        Url(broken_url, user_agent)


-def test_save():
-    # Test for urls that exist and can be archived.
-
-    url_list = [
-        "en.wikipedia.org",
-        "akamhy.github.io",
-        "www.wiktionary.org",
-        "www.w3schools.com",
-        "youtube.com",
-    ]
-    x = random.randint(0, len(url_list) - 1)
-    url1 = url_list[x]
-    target = Url(
-        url1,
-        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 "
-        "(KHTML, like Gecko) Chrome/36.0.1944.0 Safari/537.36",
-    )
-    archived_url1 = str(target.save())
-    assert url1 in archived_url1
-
-    # Test for urls that are incorrect.
-    with pytest.raises(Exception):
-        url2 = "ha ha ha ha"
-        Url(url2, user_agent)
-#     url3 = "http://www.archive.is/faq.html"
-
-#     with pytest.raises(Exception):
-#         target = Url(
-#             url3,
-#             "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) "
-#             "AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 "
-#             "Safari/533.20.27",
-#         )
-#         target.save()
-
-
 def test_near():
-    url = "google.com"
-    target = Url(
-        url,
-        "Mozilla/5.0 (Windows; U; Windows NT 6.0; de-DE) AppleWebKit/533.20.25 "
-        "(KHTML, like Gecko) Version/5.0.3 Safari/533.19.4",
-    )
-    archive_near_year = target.near(year=2010)
-    assert "2010" in str(archive_near_year.timestamp)
-
-    archive_near_month_year = str(target.near(year=2015, month=2).timestamp)
-    assert (
-        ("2015-02" in archive_near_month_year)
-        or ("2015-01" in archive_near_month_year)
-        or ("2015-03" in archive_near_month_year)
-    )
-
-    target = Url(
-        "www.python.org",
-        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
-        "(KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246",
-    )
-    archive_near_hour_day_month_year = str(
-        target.near(year=2008, month=5, day=9, hour=15)
-    )
-    assert (
-        ("2008050915" in archive_near_hour_day_month_year)
-        or ("2008050914" in archive_near_hour_day_month_year)
-        or ("2008050913" in archive_near_hour_day_month_year)
-    )
-
    with pytest.raises(Exception):
        NeverArchivedUrl = (
            "https://ee_3n.wrihkeipef4edia.org/rwti5r_ki/Nertr6w_rork_rse7c_urity"
@ -92,54 +22,7 @@ def test_near():
        target.near(year=2010)


-def test_oldest():
-    url = "github.com/akamhy/waybackpy"
-    target = Url(url, user_agent)
-    o = target.oldest()
-    assert "20200504141153" in str(o)
-    assert "2020-05-04" in str(o._timestamp)
-
-
 def test_json():
    url = "github.com/akamhy/waybackpy"
    target = Url(url, user_agent)
    assert "archived_snapshots" in str(target.JSON)
-
-
-def test_archive_url():
-    url = "github.com/akamhy/waybackpy"
-    target = Url(url, user_agent)
-    assert "github.com/akamhy" in str(target.archive_url)
-
-
-def test_newest():
-    url = "github.com/akamhy/waybackpy"
-    target = Url(url, user_agent)
-    assert url in str(target.newest())
-
-
-def test_get():
-    target = Url("google.com", user_agent)
-    assert "Welcome to Google" in target.get(target.oldest())
-
-
-def test_total_archives():
-    user_agent = (
-        "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0"
-    )
-    target = Url(" https://outlook.com ", user_agent)
-    assert target.total_archives() > 80000
-
-    target = Url(
-        " https://gaha.e4i3n.m5iai3kip6ied.cima/gahh2718gs/ahkst63t7gad8 ", user_agent
-    )
-    assert target.total_archives() == 0
-
-
-def test_known_urls():
-
-    target = Url("akamhy.github.io", user_agent)
-    assert len(target.known_urls(alive=True, subdomain=False)) > 2
-
-    target = Url("akamhy.github.io", user_agent)
-    assert len(target.known_urls()) > 3
--- a/waybackpy/version.py
+++ b/waybackpy/version.py
@ -4,7 +4,7 @@ __description__ = (
    "Archive pages and retrieve archived pages easily."
 )
 __url__ = "https://akamhy.github.io/waybackpy/"
-__version__ = "2.4.1"
+__version__ = "2.4.4"
 __author__ = "akamhy"
 __author_email__ = "akamhy@yahoo.com"
 __license__ = "MIT"
--- a/waybackpy/cdx.py
+++ b/waybackpy/cdx.py
@ -11,6 +11,7 @@ from .utils import (
 )

 # TODO : Threading support for pagination API. It's designed for Threading.
+# TODO : Add get method here if type is Vaild HTML, SVG other but not - or warc. Test it.


 class Cdx:
@ -42,7 +43,22 @@ class Cdx:
        self.use_page = False

    def cdx_api_manager(self, payload, headers, use_page=False):
-        """
+        """Act as button, we can choose between the normal API and pagination API.
+
+        Parameters
+        ----------
+        self : waybackpy.cdx.Cdx
+            The instance itself
+
+        payload : dict
+            Get request parameters name value pairs
+
+        headers : dict
+            The headers for making the GET request.
+
+        use_page : bool
+            If True use pagination API else use normal resume key based API.
+
        We have two options to get the snapshots, we use this
        method to make a selection between pagination API and
        the normal one with Resumption Key, sequential querying
@ -84,7 +100,7 @@ class Cdx:

        endpoint = "https://web.archive.org/cdx/search/cdx"
        total_pages = _get_total_pages(self.url, self.user_agent)
-        #If we only have two or less pages of archives then we care for accuracy
+        # If we only have two or less pages of archives then we care for accuracy
        # pagination API can be lagged sometimes
        if use_page == True and total_pages >= 2:
            blank_pages = 0
@ -141,7 +157,7 @@ class Cdx:
    def snapshots(self):
        """
        This function yeilds snapshots encapsulated
-        in CdxSnapshot for more usability.
+        in CdxSnapshot for increased usability.

        All the get request values are set if the conditions match

@ -188,14 +204,16 @@ class Cdx:

                prop_values = snapshot.split(" ")

-                # Making sure that we get the same number of
-                # property values as the number of properties
                prop_values_len = len(prop_values)
                properties_len = len(properties)
+
                if prop_values_len != properties_len:
                    raise WaybackError(
-                        "Snapshot returned by Cdx API has %s properties instead of expected %s properties.\nInvolved Snapshot : %s"
-                        % (prop_values_len, properties_len, snapshot)
+                        "Snapshot returned by Cdx API has {prop_values_len} properties instead of expected {properties_len} properties.\nInvolved Snapshot : {snapshot}".format(
+                            prop_values_len=prop_values_len,
+                            properties_len=properties_len,
+                            snapshot=snapshot,
+                        )
                    )

                (
--- a/waybackpy/cli.py
+++ b/waybackpy/cli.py
@ -1,9 +1,11 @@
 import os
 import re
 import sys
+import json
 import random
 import string
 import argparse
+
 from .wrapper import Url
 from .exceptions import WaybackError
 from .__version__ import __version__
@ -20,13 +22,16 @@ def _save(obj):
        if "No archive URL found in the API response" in e:
            return (
                "\n[waybackpy] Can not save/archive your link.\n[waybackpy] This "
-                "could happen because either your waybackpy (%s) is likely out of "
+                "could happen because either your waybackpy ({version}) is likely out of "
                "date or Wayback Machine is malfunctioning.\n[waybackpy] Visit "
                "https://github.com/akamhy/waybackpy for the latest version of "
-                "waybackpy.\n[waybackpy] API response Header :\n%s"
-                % (__version__, header)
+                "waybackpy.\n[waybackpy] API response Header :\n{header}".format(
+                    version=__version__, header=header
+                )
            )
-        return WaybackError(err)
+        if "URL cannot be archived by wayback machine as it is a redirect" in e:
+            return ("URL cannot be archived by wayback machine as it is a redirect")
+        raise WaybackError(err)


 def _archive_url(obj):
@ -34,7 +39,7 @@ def _archive_url(obj):


 def _json(obj):
-    return obj.JSON
+    return json.dumps(obj.JSON)


 def no_archive_handler(e, obj):
@ -45,11 +50,13 @@ def no_archive_handler(e, obj):
        if "github.com/akamhy/waybackpy" in ua:
            ua = "YOUR_USER_AGENT_HERE"
        return (
-            "\n[Waybackpy] Can not find archive for '%s'.\n[Waybackpy] You can"
+            "\n[Waybackpy] Can not find archive for '{url}'.\n[Waybackpy] You can"
            " save the URL using the following command:\n[Waybackpy] waybackpy --"
-            'user_agent "%s" --url "%s" --save' % (url, ua, url)
+            'user_agent "{user_agent}" --url "{url}" --save'.format(
+                url=url, user_agent=ua
+            )
        )
-    return WaybackError(e)
+    raise WaybackError(e)


 def _oldest(obj):
@ -85,23 +92,40 @@ def _near(obj, args):
        return no_archive_handler(e, obj)


-def _save_urls_on_file(input_list, live_url_count):
-    m = re.search("https?://([A-Za-z_0-9.-]+).*", input_list[0])
-
-    domain = "domain-unknown"
-    if m:
-        domain = m.group(1)
-
+def _save_urls_on_file(url_gen):
+    domain = None
+    sys_random = random.SystemRandom()
    uid = "".join(
-        random.choice(string.ascii_lowercase + string.digits) for _ in range(6)
+        sys_random.choice(string.ascii_lowercase + string.digits) for _ in range(6)
    )
+    url_count = 0

-    file_name = "%s-%d-urls-%s.txt" % (domain, live_url_count, uid)
-    file_content = "\n".join(input_list)
-    file_path = os.path.join(os.getcwd(), file_name)
-    with open(file_path, "w+") as f:
-        f.write(file_content)
-    return "%s\n\n'%s' saved in current working directory" % (file_content, file_name)
+    for url in url_gen:
+        url_count += 1
+        if not domain:
+            m = re.search("https?://([A-Za-z_0-9.-]+).*", url)
+
+            domain = "domain-unknown"
+
+            if m:
+                domain = m.group(1)
+
+            file_name = "{domain}-urls-{uid}.txt".format(domain=domain, uid=uid)
+            file_path = os.path.join(os.getcwd(), file_name)
+            if not os.path.isfile(file_path):
+                open(file_path, "w+").close()
+
+        with open(file_path, "a") as f:
+            f.write("{url}\n".format(url=url))
+
+        print(url)
+
+    if url_count > 0:
+        return "\n\n'{file_name}' saved in current working directory".format(
+            file_name=file_name
+        )
+    else:
+        return "No known URLs found. Please try a diffrent input!"


 def _known_urls(obj, args):
@ -109,21 +133,16 @@ def _known_urls(obj, args):
    Known urls for a domain.
    """

-    subdomain = False
-    if args.subdomain:
-        subdomain = True
+    subdomain = True if args.subdomain else False

-    alive = False
-    if args.alive:
-        alive = True
+    url_gen = obj.known_urls(subdomain=subdomain)

-    url_list = obj.known_urls(alive=alive, subdomain=subdomain)
-    total_urls = len(url_list)
-
-    if total_urls > 0:
-        return _save_urls_on_file(url_list, total_urls)
-
-    return "No known URLs found. Please try a diffrent domain!"
+    if args.file:
+        return _save_urls_on_file(url_gen)
+    else:
+        for url in url_gen:
+            print(url)
+        return "\n"


 def _get(obj, args):
@ -147,12 +166,11 @@ def _get(obj, args):

 def args_handler(args):
    if args.version:
-        return "waybackpy version %s" % __version__
+        return "waybackpy version {version}".format(version=__version__)

    if not args.url:
-        return (
-            "waybackpy %s \nSee 'waybackpy --help' for help using this tool."
-            % __version__
+        return "waybackpy {version} \nSee 'waybackpy --help' for help using this tool.".format(
+            version=__version__
        )

    obj = Url(args.url)
@ -261,8 +279,12 @@ def add_knownUrlArg(knownUrlArg):
    )
    help_text = "Use with '--known_urls' to include known URLs for subdomains."
    knownUrlArg.add_argument("--subdomain", "-sub", action="store_true", help=help_text)
-    help_text = "Only include live URLs. Will not inlclude dead links."
-    knownUrlArg.add_argument("--alive", "-a", action="store_true", help=help_text)
+    knownUrlArg.add_argument(
+        "--file",
+        "-f",
+        action="store_true",
+        help="Save the URLs in file at current directory.",
+    )


 def add_nearArg(nearArg):
@ -292,7 +314,7 @@ def parse_args(argv):
    add_getArg(parser.add_argument_group("Get source code"))
    add_knownUrlArg(
        parser.add_argument_group(
-            "URLs known and archived to Waybcak Machine for the site."
+            "URLs known and archived to Wayback Machine for the site."
        )
    )
    add_nearArg(parser.add_argument_group("Archive close to time specified"))
--- a/waybackpy/exceptions.py
+++ b/waybackpy/exceptions.py
@ -13,6 +13,13 @@ class WaybackError(Exception):
    """


+class RedirectSaveError(WaybackError):
+    """
+    Raised when the original URL is redirected and the
+    redirect URL is archived but not the original URL.
+    """
+
+
 class URLError(Exception):
    """
    Raised when malformed URLs are passed as arguments.
--- a/waybackpy/snapshot.py
+++ b/waybackpy/snapshot.py
@ -3,15 +3,24 @@ from datetime import datetime

 class CdxSnapshot:
    """
-    This class helps to use the Cdx Snapshots easily.
+    This class encapsulates the snapshots for greater usability.

    Raw Snapshot data looks like:
    org,archive)/ 20080126045828 http://github.com text/html 200 Q4YULN754FHV2U6Q5JUT6Q2P57WEWNNY 1415

-    properties is a dict containg all of the 7 cdx snapshot properties.
    """

    def __init__(self, properties):
+        """
+        Parameters
+        ----------
+        self : waybackpy.snapshot.CdxSnapshot
+            The instance itself
+
+        properties : dict
+            Properties is a dict containg all of the 7 cdx snapshot properties.
+
+        """
        self.urlkey = properties["urlkey"]
        self.timestamp = properties["timestamp"]
        self.datetime_timestamp = datetime.strptime(self.timestamp, "%Y%m%d%H%M%S")
@ -25,12 +34,18 @@ class CdxSnapshot:
        )

    def __str__(self):
-        return ("%s %s %s %s %s %s %s") % (
-            self.urlkey,
-            self.timestamp,
-            self.original,
-            self.mimetype,
-            self.statuscode,
-            self.digest,
-            self.length,
+        """Returns the Cdx snapshot line.
+
+        Output format:
+        org,archive)/ 20080126045828 http://github.com text/html 200 Q4YULN754FHV2U6Q5JUT6Q2P57WEWNNY 1415
+
+        """
+        return "{urlkey} {timestamp} {original} {mimetype} {statuscode} {digest} {length}".format(
+            urlkey=self.urlkey,
+            timestamp=self.timestamp,
+            original=self.original,
+            mimetype=self.mimetype,
+            statuscode=self.statuscode,
+            digest=self.digest,
+            length=self.length,
        )
--- a/waybackpy/utils.py
+++ b/waybackpy/utils.py
@ -1,53 +1,113 @@
 import re
+import time
 import requests
-from .exceptions import WaybackError, URLError
 from datetime import datetime

+from .exceptions import WaybackError, URLError, RedirectSaveError
+from .__version__ import __version__
+
 from urllib3.util.retry import Retry
 from requests.adapters import HTTPAdapter
-from .__version__ import __version__

 quote = requests.utils.quote
 default_user_agent = "waybackpy python package - https://github.com/akamhy/waybackpy"


-def _unix_ts_to_wayback_ts(unix_ts):
-    return datetime.utcfromtimestamp(int(unix_ts)).strftime("%Y%m%d%H%M%S")
+def _latest_version(package_name, headers):
+    """Returns the latest version of package_name.
+
+    Parameters
+    ----------
+    package_name : str
+        The name of the python package
+
+    headers : dict
+        Headers that will be used while making get requests
+
+    Return type is str
+
+    Use API <https://pypi.org/pypi/> to get the latest version of
+    waybackpy, but can be used to get latest version of any package
+    on PyPi.
+    """
+
+    request_url = "https://pypi.org/pypi/" + package_name + "/json"
+    response = _get_response(request_url, headers=headers)
+    data = response.json()
+    return data["info"]["version"]


-def _add_payload(self, payload):
-    if self.start_timestamp:
-        payload["from"] = self.start_timestamp
+def _unix_timestamp_to_wayback_timestamp(unix_timestamp):
+    """Returns unix timestamp converted to datetime.datetime

-    if self.end_timestamp:
-        payload["to"] = self.end_timestamp
+    Parameters
+    ----------
+    unix_timestamp : str, int or float
+        Unix-timestamp that needs to be converted to datetime.datetime

-    if self.gzip != True:
+    Converts and returns input unix_timestamp to datetime.datetime object.
+    Does not matter if unix_timestamp is str, float or int.
+    """
+
+    return datetime.utcfromtimestamp(int(unix_timestamp)).strftime("%Y%m%d%H%M%S")
+
+
+def _add_payload(instance, payload):
+    """Adds payload from instance that can be used to make get requests.
+
+    Parameters
+    ----------
+    instance : waybackpy.cdx.Cdx
+        instance of the Cdx class
+
+    payload : dict
+        A dict onto which we need to add keys and values based on instance.
+
+    instance is object of Cdx class and it contains the data required to fill
+    the payload dictionary.
+    """
+
+    if instance.start_timestamp:
+        payload["from"] = instance.start_timestamp
+
+    if instance.end_timestamp:
+        payload["to"] = instance.end_timestamp
+
+    if instance.gzip != True:
        payload["gzip"] = "false"

-    if self.match_type:
-        payload["matchType"] = self.match_type
+    if instance.match_type:
+        payload["matchType"] = instance.match_type

-    if self.filters and len(self.filters) > 0:
-        for i, f in enumerate(self.filters):
+    if instance.filters and len(instance.filters) > 0:
+        for i, f in enumerate(instance.filters):
            payload["filter" + str(i)] = f

-    if self.collapses and len(self.collapses) > 0:
-        for i, f in enumerate(self.collapses):
+    if instance.collapses and len(instance.collapses) > 0:
+        for i, f in enumerate(instance.collapses):
            payload["collapse" + str(i)] = f

-    payload["url"] = self.url
+    # Don't need to return anything as it's dictionary.
+    payload["url"] = instance.url


-def _ts(timestamp, data):
-    """
-    Get timestamp of last fetched archive.
-    If used before fetching any archive, will
-    use whatever self.JSON returns.
+def _timestamp_manager(timestamp, data):
+    """Returns the timestamp.

-    self.timestamp is None implies that
-    self.JSON will return any archive's JSON
-    that wayback machine provides it.
+    Parameters
+    ----------
+    timestamp : datetime.datetime
+        datetime object
+
+    data : dict
+        A python dictionary, which is loaded JSON os the availability API.
+
+    Return type:
+        datetime.datetime
+
+     If timestamp is not None then sets the value to timestamp itself.
+     If timestamp is None the returns the value from the last fetched API data.
+     If not timestamp and can not read the archived_snapshots form data return datetime.max
    """

    if timestamp:
@ -62,6 +122,21 @@ def _ts(timestamp, data):


 def _check_match_type(match_type, url):
+    """Checks the validity of match_type parameter of the CDX GET requests.
+
+    Parameters
+    ----------
+    match_type : list
+        list  that may contain any or all from  ["exact", "prefix", "host", "domain"]
+        See https://github.com/akamhy/waybackpy/wiki/Python-package-docs#url-match-scope
+
+    url : str
+        The URL used to create the waybackpy Url object.
+
+    If not vaild match_type raise Exception.
+
+    """
+
    if not match_type:
        return

@ -71,13 +146,26 @@ def _check_match_type(match_type, url):
    legal_match_type = ["exact", "prefix", "host", "domain"]

    if match_type not in legal_match_type:
-        raise WaybackError(
-            "%s is not an allowed match type.\nUse one from 'exact', 'prefix', 'host' or 'domain'"
-            % match_type
+        exc_message = "{match_type} is not an allowed match type.\nUse one from 'exact', 'prefix', 'host' or 'domain'".format(
+            match_type=match_type
        )
+        raise WaybackError(exc_message)


 def _check_collapses(collapses):
+    """Checks the validity of collapse parameter of the CDX GET request.
+
+    One or more field or field:N to 'collapses=[]' where
+    field is one of (urlkey, timestamp, original, mimetype, statuscode,
+    digest and length) and N is the first N characters of field to test.
+
+    Parameters
+    ----------
+    collapses : list
+
+    If not vaild collapses raise Exception.
+
+    """

    if not isinstance(collapses, list):
        raise WaybackError("collapses must be a list.")
@ -85,11 +173,11 @@ def _check_collapses(collapses):
    if len(collapses) == 0:
        return

-    for c in collapses:
+    for collapse in collapses:
        try:
            match = re.search(
                r"(urlkey|timestamp|original|mimetype|statuscode|digest|length)(:?[0-9]{1,99})?",
-                c,
+                collapse,
            )
            field = match.group(1)

@ -98,38 +186,62 @@ def _check_collapses(collapses):
                N = match.group(2)

            if N:
-                if not (field + N == c):
+                if not (field + N == collapse):
                    raise Exception
            else:
-                if not (field == c):
+                if not (field == collapse):
                    raise Exception

        except Exception:
-            e = "collapse argument '%s' is not following the cdx collapse syntax." % c
-            raise WaybackError(e)
+            exc_message = "collapse argument '{collapse}' is not following the cdx collapse syntax.".format(
+                collapse=collapse
+            )
+            raise WaybackError(exc_message)


 def _check_filters(filters):
+    """Checks the validity of filter parameter of the CDX GET request.
+
+    Any number of filter params of the following form may be specified:
+        filters=["[!]field:regex"] may be specified..
+
+    Parameters
+    ----------
+    filters : list
+
+    If not vaild filters raise Exception.
+
+    """
+
    if not isinstance(filters, list):
        raise WaybackError("filters must be a list.")

    # [!]field:regex
-    for f in filters:
+    for _filter in filters:
        try:
+
            match = re.search(
                r"(\!?(?:urlkey|timestamp|original|mimetype|statuscode|digest|length)):(.*)",
-                f,
+                _filter,
            )

            key = match.group(1)
            val = match.group(2)

        except Exception:
-            e = "Filter '%s' not following the cdx filter syntax." % f
-            raise WaybackError(e)
+
+            exc_message = (
+                "Filter '{_filter}' is not following the cdx filter syntax.".format(
+                    _filter=_filter
+                )
+            )
+            raise WaybackError(exc_message)


 def _cleaned_url(url):
+    """Sanatize the url
+    Remove and replace illegal whitespace characters from the URL.
+    """
    return str(url).strip().replace(" ", "%20")


@ -143,18 +255,34 @@ def _url_check(url):
    """

    if "." not in url:
-        raise URLError("'%s' is not a vaild URL." % url)
+        exc_message = "'{url}' is not a vaild URL.".format(url=url)
+        raise URLError(exc_message)


 def _full_url(endpoint, params):
-    full_url = endpoint
-    if params:
-        full_url = endpoint if endpoint.endswith("?") else (endpoint + "?")
-        for key, val in params.items():
-            key = "filter" if key.startswith("filter") else key
-            key = "collapse" if key.startswith("collapse") else key
-            amp = "" if full_url.endswith("?") else "&"
-            full_url = full_url + amp + "%s=%s" % (key, quote(str(val)))
+    """API endpoint + GET parameters = full_url
+
+    Parameters
+    ----------
+    endpoint : str
+        The API endpoint
+
+    params : dict
+        Dictionary that has name-value pairs.
+
+    Return type is str
+
+    """
+
+    if not params:
+        return endpoint
+
+    full_url = endpoint if endpoint.endswith("?") else (endpoint + "?")
+    for key, val in params.items():
+        key = "filter" if key.startswith("filter") else key
+        key = "collapse" if key.startswith("collapse") else key
+        amp = "" if full_url.endswith("?") else "&"
+        full_url = full_url + amp + "{key}={val}".format(key=key, val=quote(str(val)))
    return full_url


@ -166,24 +294,42 @@ def _get_total_pages(url, user_agent):
    This func returns number of pages of archives (type int).
    """
    total_pages_url = (
-        "https://web.archive.org/cdx/search/cdx?url=%s&showNumPages=true" % url
+        "https://web.archive.org/cdx/search/cdx?url={url}&showNumPages=true".format(
+            url=url
+        )
    )
    headers = {"User-Agent": user_agent}
    return int((_get_response(total_pages_url, headers=headers).text).strip())


-def _archive_url_parser(header, url):
-    """
+def _archive_url_parser(
+    header, url, latest_version=__version__, instance=None, response=None
+):
+    """Returns the archive after parsing it from the response header.
+
+    Parameters
+    ----------
+    header : str
+        The response header of WayBack Machine's Save API
+
+    url : str
+        The input url, the one used to created the Url object.
+
+    latest_version : str
+        The latest version of waybackpy (default is __version__)
+
+    instance : waybackpy.wrapper.Url
+        Instance of Url class
+
+
    The wayback machine's save API doesn't
    return JSON response, we are required
    to read the header of the API response
-    and look for the archive URL.
+    and find the archive URL.

-    This method has some regexen (or regexes)
-    that search for archive url in header.
-
-    This method is used when you try to
-    save a webpage on wayback machine.
+    This method has some regular expressions
+    that are used to search for the archive url
+    in the response header of Save API.

    Two cases are possible:
    1) Either we find the archive url in
@ -194,10 +340,39 @@ def _archive_url_parser(header, url):

    If we found the archive URL we return it.

+    Return format:
+    web.archive.org/web/<TIMESTAMP>/<URL>
+
    And if we couldn't find it, we raise
    WaybackError with an error message.
    """

+    if "save redirected" in header and instance:
+        time.sleep(60)  # makeup for archive time
+
+        now = datetime.utcnow().timetuple()
+        timestamp = _wayback_timestamp(
+            year=now.tm_year,
+            month=now.tm_mon,
+            day=now.tm_mday,
+            hour=now.tm_hour,
+            minute=now.tm_min,
+        )
+
+        return_str = "web.archive.org/web/{timestamp}/{url}".format(
+            timestamp=timestamp, url=url
+        )
+        url = "https://" + return_str
+
+        headers = {"User-Agent": instance.user_agent}
+
+        res = _get_response(url, headers=headers)
+
+        if res.status_code < 400:
+            return "web.archive.org/web/{timestamp}/{url}".format(
+                timestamp=timestamp, url=url
+            )
+
    # Regex1
    m = re.search(r"Content-Location: (/web/[0-9]{14}/.*)", str(header))
    if m:
@ -215,19 +390,65 @@ def _archive_url_parser(header, url):
    if m:
        return m.group(1)

-    raise WaybackError(
-        "No archive URL found in the API response. "
-        "If '%s' can be accessed via your web browser then either "
-        "this version of waybackpy (%s) is out of date or WayBack Machine is malfunctioning. Visit "
-        "'https://github.com/akamhy/waybackpy' for the latest version "
-        "of waybackpy.\nHeader:\n%s" % (url, __version__, str(header))
-    )
+    if response:
+        if response.url:
+            if "web.archive.org/web" in response.url:
+                m = re.search(
+                    r"web\.archive\.org/web/(?:[0-9]*?)/(?:.*)$",
+                    str(response.url).strip(),
+                )
+                if m:
+                    return m.group(0)
+
+    if instance:
+        newest_archive = None
+        try:
+            newest_archive = instance.newest()
+        except WaybackError:
+            pass  # We don't care as this is a save request
+
+        if newest_archive:
+            minutes_old = (
+                datetime.utcnow() - newest_archive.timestamp
+            ).total_seconds() / 60.0
+
+            if minutes_old <= 30:
+                archive_url = newest_archive.archive_url
+                m = re.search(r"web\.archive\.org/web/[0-9]{14}/.*", archive_url)
+                if m:
+                    instance.cached_save = True
+                    return m.group(0)
+
+    if __version__ == latest_version:
+        exc_message = (
+            "No archive URL found in the API response. "
+            "If '{url}' can be accessed via your web browser then either "
+            "Wayback Machine is malfunctioning or it refused to archive your URL."
+            "\nHeader:\n{header}".format(url=url, header=header)
+        )
+
+        if "save redirected" == header.strip():
+            raise RedirectSaveError(
+                "URL cannot be archived by wayback machine as it is a redirect.\nHeader:\n{header}".format(
+                    header=header
+                )
+            )
+    else:
+        exc_message = (
+            "No archive URL found in the API response. "
+            "If '{url}' can be accessed via your web browser then either "
+            "this version of waybackpy ({version}) is out of date or WayBack "
+            "Machine is malfunctioning. Visit 'https://github.com/akamhy/waybackpy' "
+            "for the latest version of waybackpy.\nHeader:\n{header}".format(
+                url=url, version=__version__, header=header
+            )
+        )
+
+    raise WaybackError(exc_message)


 def _wayback_timestamp(**kwargs):
-    """
-    Wayback Machine archive URLs
-    have a timestamp in them.
+    """Returns a valid waybackpy timestamp.

    The standard archive URL format is
    https://web.archive.org/web/20191214041711/https://www.youtube.com
@ -237,13 +458,17 @@ def _wayback_timestamp(**kwargs):
    2 ) timestamp (20191214041711)
    3 ) https://www.youtube.com, the original URL

-    The near method takes year, month, day, hour and minute
-    as Arguments, their type is int.
+
+    The near method of Url class in wrapper.py takes year, month, day, hour
+    and minute as arguments, their type is int.

    This method takes those integers and converts it to
    wayback machine timestamp and returns it.

-    Return format is string.
+
+    zfill(2) adds 1 zero in front of single digit days, months hour etc.
+
+    Return type is string.
    """

    return "".join(
@ -252,18 +477,45 @@ def _wayback_timestamp(**kwargs):


 def _get_response(
-    endpoint, params=None, headers=None, retries=5, return_full_url=False
+    endpoint,
+    params=None,
+    headers=None,
+    return_full_url=False,
+    retries=5,
+    backoff_factor=0.5,
+    no_raise_on_redirects=False,
 ):
-    """
-    This function is used make get request.
-    We use the requests package to make the
-    requests.
+    """Makes get requests.
+
+    Parameters
+    ----------
+    endpoint : str
+        The API endpoint.
+
+    params : dict
+        The get request parameters. (default is None)
+
+    headers : dict
+        Headers for the get request. (default is None)
+
+    return_full_url : bool
+        Determines whether the call went full url returned along with the
+        response. (default is False)
+
+    retries : int
+        Maximum number of retries for the get request. (default is 5)
+
+    backoff_factor : float
+        The factor by which we determine the next retry time after wait.
+        https://urllib3.readthedocs.io/en/latest/reference/urllib3.util.html
+        (default is 0.5)
+
+    no_raise_on_redirects : bool
+        If maximum 30(default for requests) times redirected than instead of
+        exceptions return. (default is False)


-    We try five times and if it fails it raises
-    WaybackError exception.
-
-    You can handles WaybackError by importing:
+    To handle WaybackError:
    from waybackpy.exceptions import WaybackError

    try:
@ -274,17 +526,39 @@ def _get_response(

    # From https://stackoverflow.com/a/35504626
    # By https://stackoverflow.com/users/401467/datashaman
+
    s = requests.Session()
+
    retries = Retry(
-        total=retries, backoff_factor=0.5, status_forcelist=[500, 502, 503, 504]
+        total=retries,
+        backoff_factor=backoff_factor,
+        status_forcelist=[500, 502, 503, 504],
    )
+
    s.mount("https://", HTTPAdapter(max_retries=retries))
+
+    # The URL with parameters required for the get request
    url = _full_url(endpoint, params)
+
    try:
+
        if not return_full_url:
            return s.get(url, headers=headers)
+
        return (url, s.get(url, headers=headers))
+
    except Exception as e:
-        exc = WaybackError("Error while retrieving %s" % url)
+
+        reason = str(e)
+
+        if no_raise_on_redirects:
+            if "Exceeded 30 redirects" in reason:
+                return
+
+        exc_message = "Error while retrieving {url}.\n{reason}".format(
+            url=url, reason=reason
+        )
+
+        exc = WaybackError(exc_message)
        exc.__cause__ = e
        raise exc
--- a/waybackpy/wrapper.py
+++ b/waybackpy/wrapper.py
@ -1,6 +1,6 @@
-import requests
-import concurrent.futures
+import re
 from datetime import datetime, timedelta
+
 from .exceptions import WaybackError
 from .cdx import Cdx
 from .utils import (
@ -10,12 +10,85 @@ from .utils import (
    default_user_agent,
    _url_check,
    _cleaned_url,
-    _ts,
-    _unix_ts_to_wayback_ts,
+    _timestamp_manager,
+    _unix_timestamp_to_wayback_timestamp,
+    _latest_version,
 )


 class Url:
+    """
+
+    Attributes
+    ----------
+    url : str
+        The input URL, wayback machine API operations are performed
+        on this URL after sanatizing it.
+
+    user_agent : str
+        The user_agent used while making the GET requests to the
+        Wayback machine APIs
+
+    _archive_url : str
+        Caches the last fetched archive.
+
+    timestamp : datetime.datetime
+        timestamp of the archive URL as datetime object for
+        greater usability
+
+    _JSON : dict
+        Caches the last fetched availability API data
+
+    latest_version : str
+        The latest version of waybackpy on PyPi
+
+    cached_save : bool
+        Flag to check if WayBack machine returned a cached
+        archive instead of creating a new archive. WayBack
+        machine allows only one 1 archive for an URL in
+        30 minutes. If the archive returned by WayBack machine
+        is older than 3 minutes than this flag is set to True
+
+    Methods turned properties
+    ----------
+    JSON : dict
+        JSON response of availability API as dictionary / loaded JSON
+
+    archive_url : str
+        Return the archive url, returns str
+
+    _timestamp : datetime.datetime
+        Sets the value of self.timestamp if still not set
+
+    Methods
+    -------
+    save()
+        Archives the URL on WayBack machine
+
+    get(url="", user_agent="", encoding="")
+        Gets the source of archive url, can also be used to get source
+        of any URL if passed into it.
+
+    near(year=None, month=None, day=None, hour=None, minute=None, unix_timestamp=None)
+        Wayback Machine can have many archives for a URL/webpage, sometimes we want
+        archive close to a specific time.
+        This method takes year, month, day, hour, minute and unix_timestamp as input.
+
+    oldest(year=1994)
+        The oldest archive of an URL.
+
+    newest()
+        The newest archive of an URL
+
+    total_archives(start_timestamp=None, end_timestamp=None)
+        total number of archives of an URL, the timeframe can be confined by
+        start_timestamp and end_timestamp
+
+    known_urls(subdomain=False, host=False, start_timestamp=None, end_timestamp=None, match_type="prefix")
+        Known URLs for an URL, subdomain, URL as prefix etc.
+
+    """
+
    def __init__(self, url, user_agent=default_user_agent):
        self.url = url
        self.user_agent = str(user_agent)
@ -23,35 +96,26 @@ class Url:
        self._archive_url = None
        self.timestamp = None
        self._JSON = None
-        self._alive_url_list = []
+        self.latest_version = None
+        self.cached_save = False

    def __repr__(self):
-        return "waybackpy.Url(url=%s, user_agent=%s)" % (self.url, self.user_agent)
+        return "waybackpy.Url(url={url}, user_agent={user_agent})".format(
+            url=self.url, user_agent=self.user_agent
+        )

    def __str__(self):
-        """
-        Output when print() is used on <class 'waybackpy.wrapper.Url'>
-        This should print an archive URL.
-
-        We check if self._archive_url is not None.
-        If not None, good. We return string of self._archive_url.
-
-        If self._archive_url is None, it means we ain't used any method that
-        sets self._archive_url, we now set self._archive_url to self.archive_url
-        and return it.
-        """
-
        if not self._archive_url:
            self._archive_url = self.archive_url
-        return "%s" % self._archive_url
+
+        return "{archive_url}".format(archive_url=self._archive_url)

    def __len__(self):
-        """
-        Why do we have len here?
+        """Number of days between today and the date of archive based on the timestamp

-        Applying len() on <class 'waybackpy.wrapper.Url'>
-        will calculate the number of days between today and
-        the archive timestamp.
+        len() of waybackpy.wrapper.Url should return
+        the number of days between today and the
+        archive timestamp.

        Can be applied on return values of near and its
        childs (e.g. oldest) and if applied on waybackpy.Url()
@ -73,32 +137,30 @@ class Url:

    @property
    def JSON(self):
-        """
-        If the end user has used near() or its childs like oldest, newest
-        and archive_url then the JSON response of these are cached in self._JSON
+        """Returns JSON response of availability API as dictionary / loaded JSON

-        If we find that self._JSON is not None we return it.
-        else we get the response of 'https://archive.org/wayback/available?url=YOUR-URL'
-        and return it.
+        return type : dict
        """

+        # If user used the near method or any method that depends on near, we
+        # are certain that we have a loaded dictionary cached in self._JSON.
+        # Return the loaded JSON data.
        if self._JSON:
            return self._JSON

+        # If no cached data found, get data and return + cache it.
        endpoint = "https://archive.org/wayback/available"
        headers = {"User-Agent": self.user_agent}
-        payload = {"url": "%s" % _cleaned_url(self.url)}
+        payload = {"url": "{url}".format(url=_cleaned_url(self.url))}
        response = _get_response(endpoint, params=payload, headers=headers)
-        return response.json()
+        self._JSON = response.json()
+        return self._JSON

    @property
    def archive_url(self):
-        """
-        Returns any random archive for the instance.
-        But if near, oldest, newest were used before
-        then it returns the same archive again.
+        """Return the archive url.

-        We cache archive in self._archive_url
+        return type : str
        """

        if self._archive_url:
@ -118,34 +180,94 @@ class Url:

    @property
    def _timestamp(self):
-        self.timestamp = _ts(self.timestamp, self.JSON)
-        return self.timestamp
+        """Sets the value of self.timestamp if still not set.
+
+        Return type : datetime.datetime
+
+        """
+        return _timestamp_manager(self.timestamp, self.JSON)

    def save(self):
-        """
+        """Saves/Archive the URL.
+
        To save a webpage on WayBack machine we
        need to send get request to https://web.archive.org/save/

        And to get the archive URL we are required to read the
        header of the API response.

-        _get_response() takes care of the get requests. It uses requests
-        package.
+        _get_response() takes care of the get requests.

        _archive_url_parser() parses the archive from the header.

+        return type : waybackpy.wrapper.Url
+
        """
        request_url = "https://web.archive.org/save/" + _cleaned_url(self.url)
        headers = {"User-Agent": self.user_agent}
-        response = _get_response(request_url, params=None, headers=headers)
-        self._archive_url = "https://" + _archive_url_parser(response.headers, self.url)
-        self.timestamp = datetime.utcnow()
+
+        response = _get_response(
+            request_url,
+            params=None,
+            headers=headers,
+            backoff_factor=2,
+            no_raise_on_redirects=True,
+        )
+
+        if not self.latest_version:
+            self.latest_version = _latest_version("waybackpy", headers=headers)
+        if response:
+            res_headers = response.headers
+        else:
+            res_headers = "save redirected"
+        self._archive_url = "https://" + _archive_url_parser(
+            res_headers,
+            self.url,
+            latest_version=self.latest_version,
+            instance=self,
+            response=response,
+        )
+
+        if response.status_code == 509:
+            raise WaybackError(
+                "Can not save '{url}'. You have probably reached the limit of active "
+                "sessions. Try later.".format(
+                    url=_cleaned_url(self.url), text=response.text
+                )
+            )
+
+        m = re.search(
+            r"https?://web.archive.org/web/([0-9]{14})/http", self._archive_url
+        )
+        str_ts = m.group(1)
+        ts = datetime.strptime(str_ts, "%Y%m%d%H%M%S")
+        now = datetime.utcnow()
+        total_seconds = int((now - ts).total_seconds())
+
+        if total_seconds > 60 * 3:
+            self.cached_save = True
+
+        self.timestamp = ts
+
        return self

    def get(self, url="", user_agent="", encoding=""):
-        """
-        Return the source code of the last archived URL,
-        if no URL is passed to this method.
+        """GET the source of archive or any other URL.
+
+        url : str, waybackpy.wrapper.Url
+            The method will return the source code of
+            this URL instead of last fetched archive.
+
+        user_agent : str
+            The user_agent for GET request to API
+
+        encoding : str
+            If user is using any other encoding that
+            can't be detected by response.encoding
+
+        Return the source code of the last fetched
+        archive URL if no URL is passed to this method
+        else it returns the source code of url passed.

        If encoding is not supplied, it is auto-detected
         from the response itself by requests package.
@ -181,6 +303,27 @@ class Url:
        unix_timestamp=None,
    ):
        """
+        Parameters
+        ----------
+
+        year : int
+            Archive close to year
+
+        month : int
+            Archive close to month
+
+        day : int
+            Archive close to day
+
+        hour : int
+            Archive close to hour
+
+        minute : int
+            Archive close to minute
+
+        unix_timestamp : str, float or int
+            Archive close to this unix_timestamp
+
        Wayback Machine can have many archives of a webpage,
        sometimes we want archive close to a specific time.

@ -203,7 +346,7 @@ class Url:
        """

        if unix_timestamp:
-            timestamp = _unix_ts_to_wayback_ts(unix_timestamp)
+            timestamp = _unix_timestamp_to_wayback_timestamp(unix_timestamp)
        else:
            now = datetime.utcnow().timetuple()
            timestamp = _wayback_timestamp(
@ -216,15 +359,19 @@ class Url:

        endpoint = "https://archive.org/wayback/available"
        headers = {"User-Agent": self.user_agent}
-        payload = {"url": "%s" % _cleaned_url(self.url), "timestamp": timestamp}
+        payload = {
+            "url": "{url}".format(url=_cleaned_url(self.url)),
+            "timestamp": timestamp,
+        }
        response = _get_response(endpoint, params=payload, headers=headers)
        data = response.json()

        if not data["archived_snapshots"]:
            raise WaybackError(
-                "Can not find archive for '%s' try later or use wayback.Url(url, user_agent).save() "
-                "to create a new archive.\nAPI response:\n%s"
-                % (_cleaned_url(self.url), response.text)
+                "Can not find archive for '{url}' try later or use wayback.Url(url, user_agent).save() "
+                "to create a new archive.\nAPI response:\n{text}".format(
+                    url=_cleaned_url(self.url), text=response.text
+                )
            )
        archive_url = data["archived_snapshots"]["closest"]["url"]
        archive_url = archive_url.replace(
@ -249,28 +396,45 @@ class Url:

        We simply pass the year in near() and return it.
        """
+
        return self.near(year=year)

    def newest(self):
-        """
-        Return the newest Wayback Machine archive available for this URL.
+        """Return the newest Wayback Machine archive available.

-        We return the output of self.near() as it deafults to current utc time.
+        We return the return value of self.near() as it deafults to current UTC time.

        Due to Wayback Machine database lag, this may not always be the
        most recent archive.
+
+        return type : waybackpy.wrapper.Url
        """
+
        return self.near()

    def total_archives(self, start_timestamp=None, end_timestamp=None):
-        """
+        """Returns the total number of archives for an URL
+
+        Parameters
+        ----------
+        start_timestamp : str
+            1 to 14 digit string of numbers, you are not required to
+            pass a full 14 digit timestamp.
+
+        end_timestamp : str
+            1 to 14 digit string of numbers, you are not required to
+            pass a full 14 digit timestamp.
+
+
+        return type : int
+
+
        A webpage can have multiple archives on the wayback machine
        If someone wants to count the total number of archives of a
        webpage on wayback machine they can use this method.

        Returns the total number of Wayback Machine archives for the URL.

-        Return type in integer.
        """

        cdx = Cdx(
@ -279,71 +443,66 @@ class Url:
            start_timestamp=start_timestamp,
            end_timestamp=end_timestamp,
        )
+
+        # cdx.snapshots() is generator not list.
        i = 0
        for _ in cdx.snapshots():
            i = i + 1
        return i

-    def live_urls_finder(self, url):
-        """
-        This method is used to check if supplied url
-        is >= 400.
-        """
-
-        try:
-            response_code = requests.get(url).status_code
-        except Exception:
-            return  # we don't care if Exception
-
-        # 200s are OK and 300s are usually redirects, if you don't want redirects replace 400 with 300
-        if response_code >= 400:
-            return
-
-        self._alive_url_list.append(url)
-
    def known_urls(
-        self, alive=False, subdomain=False, start_timestamp=None, end_timestamp=None
+        self,
+        subdomain=False,
+        host=False,
+        start_timestamp=None,
+        end_timestamp=None,
+        match_type="prefix",
    ):
-        """
-        Returns list of URLs known to exist for given domain name
-        because these URLs were crawled by WayBack Machine spider.
-        Useful for pen-testing.
-        """
+        """Yields known_urls URLs from the CDX API.

-        # Idea by Mohammed Diaa (https://github.com/mhmdiaa) from:
-        # https://gist.github.com/mhmdiaa/adf6bff70142e5091792841d4b372050
+        Parameters
+        ----------

-        url_list = []
+        subdomain : bool
+            If True fetch subdomain URLs along with the host URLs.
+
+        host : bool
+            Only fetch host URLs.
+
+        start_timestamp : str
+            1 to 14 digit string of numbers, you are not required to
+            pass a full 14 digit timestamp.
+
+        end_timestamp : str
+            1 to 14 digit string of numbers, you are not required to
+            pass a full 14 digit timestamp.
+
+        match_type : str
+            One of  (exact, prefix, host and domain)
+
+        return type : waybackpy.snapshot.CdxSnapshot
+
+        Yields list of URLs known to exist for given input.
+        Defaults to input URL as prefix.
+
+        Based on:
+        https://gist.github.com/mhmdiaa/adf6bff70142e5091792841d4b372050
+        By Mohammed Diaa (https://github.com/mhmdiaa)
+        """

        if subdomain:
-            cdx = Cdx(
-                _cleaned_url(self.url),
-                user_agent=self.user_agent,
-                start_timestamp=start_timestamp,
-                end_timestamp=end_timestamp,
-                match_type="domain",
-                collapses=["urlkey"],
-            )
-        else:
-            cdx = Cdx(
-                _cleaned_url(self.url),
-                user_agent=self.user_agent,
-                start_timestamp=start_timestamp,
-                end_timestamp=end_timestamp,
-                match_type="host",
-                collapses=["urlkey"],
-            )
+            match_type = "domain"
+        if host:
+            match_type = "host"

-        snapshots = cdx.snapshots()
+        cdx = Cdx(
+            _cleaned_url(self.url),
+            user_agent=self.user_agent,
+            start_timestamp=start_timestamp,
+            end_timestamp=end_timestamp,
+            match_type=match_type,
+            collapses=["urlkey"],
+        )

-        url_list = []
-        for snapshot in snapshots:
-            url_list.append(snapshot.original)
-
-        # Remove all deadURLs from url_list if alive=True
-        if alive:
-            with concurrent.futures.ThreadPoolExecutor() as executor:
-                executor.map(self.live_urls_finder, url_list)
-            url_list = self._alive_url_list
-
-        return url_list
+        for snapshot in cdx.snapshots():
+            yield (snapshot.original)
Author	SHA1	Message	Date
akamhy	a7b805292d	changes made for v2.4.4 (update download_url) (#100 ) * v2.4.4 (update download_url) * v2.4.4 (update __version__) * +1 add jonasjancarik	2021-09-03 11:28:26 +05:30
Jonáš Jančařík	6dc6124dc4	Raise error on a 509 response (too many sessions) (#99 ) * Raise error on a 509 response (too many sessions) When the response code is 509, raise an error with an explanation (based on the actual error message contained in the response HTML). * Raise error on a 509 response (too many sessions) - linting	2021-09-03 08:04:36 +05:30
Jens Finkhaeuser	5a7fc7d568	Fix typo (#95 )	2021-04-13 16:58:34 +05:30
Akash Mahanty	5a9c861cad	v2.4.3 (#94 ) * 2.4.3 * 2.4.3	2021-04-02 10:41:59 +05:30
Akash Mahanty	dd1917c77e	added RedirectSaveError - for failed saves if the URL is a permanent … (#93 ) * added RedirectSaveError - for failed saves if the URL is a permanent redirect. * check if url is redirect before throwing exceptions, res.url is the redirect url if redirected at all * update tests and cli errors	2021-04-02 10:38:17 +05:30
Akash Mahanty	db8f902cff	Add doc strings (#90 ) * Added some docstrings in utils.py * renamed some func/meth to better names and added doc strings + lint * added more docstrings * more docstrings * improve docstrings * docstrings * added more docstrings, lint * fix import error	2021-01-26 11:56:03 +05:30
Akash Mahanty	88cda94c0b	v2.4.2 (#89 ) * v2.4.2 * v2.4.2	2021-01-24 17:03:35 +05:30
Akash Mahanty	09290f88d1	fix one more error	2021-01-24 16:58:53 +05:30
Akash Mahanty	e5835091c9	import re	2021-01-24 16:56:59 +05:30
Akash Mahanty	7312ed1f4f	set cached_save to True if archive older than 3 mins.	2021-01-24 16:53:36 +05:30
Akash Mahanty	6ae8f843d3	add --file to --known_urls	2021-01-24 16:15:11 +05:30
Akash Mahanty	36b936820b	known urls now yileds, more reliable. And save the file in chucks wrt to response. --file arg can be used to create output file, if --file not used no output will be saved in any file. (#88 )	2021-01-24 16:11:39 +05:30
Akash Mahanty	a3bc6aad2b	too much API usage by duplicate tests was causing too much tests failure	2021-01-23 21:08:21 +05:30
Akash Mahanty	edc2f63d93	Output valid JSON, dumps python dict. Make JSON valid.	2021-01-23 20:43:52 +05:30
Akash Mahanty	ffe0810b12	flag to check if the archive saved is 30 mins older or not	2021-01-16 12:06:08 +05:30
Akash Mahanty	40233eb115	improve code quality, remove unused imports, use system randomness etc	2021-01-16 11:35:13 +05:30
Akash Mahanty	d549d31421	improve save method, now we know that 302 errors indicates that wayback machine is archiving the URL and hasn't yet archived. We construct an artifical archive with the current UTC time and check for HTTP status code 20* or 30*. If we verify the archival, we return the artifical archive. The artificial archive will automatically point to the new archive or in best case will be the new archive after some time.	2021-01-16 10:47:43 +05:30
Akash Mahanty	0725163af8	mimify the logo, remove ugly old logos	2021-01-15 18:14:48 +05:30
Akash Mahanty	712471176b	better error messages(str), check latest version before asking for an upgrade and rm alive checking	2021-01-15 16:47:26 +05:30
Akash Mahanty	dcd7b03302	getting rid of c style str formatting, now using .format	2021-01-14 19:30:07 +05:30
Akash Mahanty	76205d9cf6	backoff_factor=2 for save, incr success by 25%	2021-01-13 10:13:16 +05:30
Akash Mahanty	ec0a0d04cc	+ dequeued0 dequeued0 (https://github.com/dequeued0) for reporting bugs and useful feature requests.	2021-01-12 10:52:41 +05:30