Clean up exceptions, docstrings, and comments

Docstrings on dunder functions are redundant and typically ignored
Limit to reasonable line length
General grammar and style corrections
Clarify docstrings and exceptions
Format docstrings per PEP 257 -- Docstring Conventions

waybackpy/wrapper.py

@@ -5,6 +5,7 @@ import sys
 import json
 from datetime import datetime
 from waybackpy.exceptions import WaybackError
+from waybackpy.__version__ import __version__
 
 if sys.version_info >= (3, 0):  # If the python ver >= 3
     from urllib.request import Request, urlopen
@@ -24,21 +25,18 @@ class Url:
         self.url_check()  # checks url validity on init.
 
     def __repr__(self):
-        """Representation of the object."""
         return "waybackpy.Url(url=%s, user_agent=%s)" % (self.url, self.user_agent)
 
     def __str__(self):
-        """String representation of the object."""
         return "%s" % self.clean_url()
 
     def __len__(self):
-        """Length of the URL."""
         return len(self.clean_url())
 
     def url_check(self):
         """Check for common URL problems."""
         if "." not in self.url:
-            raise URLError("'%s' is not a vaild url." % self.url)
+            raise URLError("'%s' is not a vaild URL." % self.url)
         return True
 
     def clean_url(self):
@@ -46,7 +44,7 @@ class Url:
         return str(self.url).strip().replace(" ", "_")
 
     def wayback_timestamp(self, **kwargs):
-        """Return the formatted the timestamp."""
+        """Return a formatted timestamp."""
         return (
             str(kwargs["year"])
             + str(kwargs["month"]).zfill(2)
@@ -56,7 +54,7 @@ class Url:
         )
 
     def save(self):
-        """Create a new archives for an URL on the Wayback Machine."""
+        """Create a new Wayback Machine archive for this URL."""
         request_url = "https://web.archive.org/save/" + self.clean_url()
         hdr = {"User-Agent": "%s" % self.user_agent}  # nosec
         req = Request(request_url, headers=hdr)  # nosec
@@ -75,14 +73,18 @@ class Url:
             if arch:
                 return arch.group(1)
             raise WaybackError(
-                "No archive url found in the API response. Visit https://github.com/akamhy/waybackpy for latest version of waybackpy.\nHeader:\n%s"
+                "No archive URL found in the API response. "
-                % str(header)
+                "This version of waybackpy (%s) is likely out of date. Visit "
+                "https://github.com/akamhy/waybackpy for the latest version "
+                "of waybackpy.\nHeader:\n%s" % (__version__, str(header))
             )
 
         return "https://" + archive_url_parser(header)
 
     def get(self, url=None, user_agent=None, encoding=None):
-        """Returns the source code of the supplied URL. Auto detects the encoding if not supplied."""
+        """Return the source code of the supplied URL.
+        If encoding is not supplied, it is auto-detected from the response.
+        """
 
         if not url:
             url = self.clean_url()
@@ -111,9 +113,10 @@ class Url:
         return response
 
     def near(self, **kwargs):
-        """ Returns the archived from Wayback Machine for an URL closest to the time supplied.
+        """Return the closest Wayback Machine archive to the time supplied.
+
         Supported params are year, month, day, hour and minute.
-            The non supplied parameters are default to the runtime time.
+        Any non-supplied parameters default to the current time.
         """
         year = kwargs.get("year", datetime.utcnow().strftime("%Y"))
         month = kwargs.get("month", datetime.utcnow().strftime("%m"))
@@ -133,8 +136,8 @@ class Url:
         data = json.loads(response.read().decode("UTF-8"))
         if not data["archived_snapshots"]:
             raise WaybackError(
-                "'%s' is not yet archived. Use wayback.Url(url, user_agent).save() to create a new archive."
+                "'%s' is not yet archived. Use wayback.Url(url, user_agent).save() "
-                % self.clean_url()
+                "to create a new archive." % self.clean_url()
             )
         archive_url = data["archived_snapshots"]["closest"]["url"]
         # wayback machine returns http sometimes, idk why? But they support https
@@ -144,15 +147,19 @@ class Url:
         return archive_url
 
     def oldest(self, year=1994):
-        """Returns the oldest archive from Wayback Machine for an URL."""
+        """Return the oldest Wayback Machine archive for this URL."""
         return self.near(year=year)
 
     def newest(self):
-        """Returns the newest archive on Wayback Machine for an URL, sometimes you may not get the newest archive because wayback machine DB lag."""
+        """Return the newest Wayback Machine archive available for this URL.
+
+        Due to Wayback Machine database lag, this may not always be the
+        most recent archive.
+        """
         return self.near()
 
     def total_archives(self):
-        """Returns the total number of archives on Wayback Machine for an URL."""
+        """Returns the total number of Wayback Machine archives for this URL."""
         hdr = {"User-Agent": "%s" % self.user_agent}
         request_url = (
             "https://web.archive.org/cdx/search/cdx?url=%s&output=json&fl=statuscode"
@@ -160,6 +167,5 @@ class Url:
         )
         req = Request(request_url, headers=hdr)  # nosec
         response = self.get_response(req)
-        return str(response.read()).count(
+        # Most efficient method to count number of archives (yet)
-            ","
+        return str(response.read()).count(",")
-        )  # Most efficient method to count number of archives (yet)