Typing (#128)

* fix: CI yml name

* add: mypy configuraion

* add: type annotation to waybackpy modules

* add: type annotation to test modules

* fix: mypy command

* add: types-requests to dev deps

* fix: disable max-line-length

* fix: move pytest.ini into setup.cfg

* add: urllib3 to deps

* fix: Retry (ref: https://github.com/python/typeshed/issues/6893)

* fix: f-string

* fix: shorten long lines

* add: staticmethod decorator to no-self-use methods

* fix: str(headers)->headers_str

* fix: error message

* fix: revert "str(headers)->headers_str" and ignore assignment CaseInsensitiveDict with str

* fix: mypy error

waybackpy/utils.py

@@ -2,22 +2,43 @@ import requests
 
 from . import __version__
 
-DEFAULT_USER_AGENT = "waybackpy %s - https://github.com/akamhy/waybackpy" % __version__
+DEFAULT_USER_AGENT: str = (
+    f"waybackpy {__version__} - https://github.com/akamhy/waybackpy"
+)
 
 
-def latest_version_pypi(package_name, user_agent=DEFAULT_USER_AGENT):
+def latest_version_pypi(package_name: str, user_agent: str = DEFAULT_USER_AGENT) -> str:
     request_url = "https://pypi.org/pypi/" + package_name + "/json"
     headers = {"User-Agent": user_agent}
     response = requests.get(request_url, headers=headers)
     data = response.json()
-    return data["info"]["version"]
+    if (
+        data is not None
+        and "info" in data
+        and data["info"] is not None
+        and "version" in data["info"]
+        and data["info"]["version"] is not None
+    ):
+        return str(data["info"]["version"])
+    else:
+        raise ValueError("Could not get latest pypi version")
 
 
-def latest_version_github(package_name, user_agent=DEFAULT_USER_AGENT):
+def latest_version_github(
+    package_name: str, user_agent: str = DEFAULT_USER_AGENT
+) -> str:
     request_url = (
         "https://api.github.com/repos/akamhy/" + package_name + "/releases?per_page=1"
     )
     headers = {"User-Agent": user_agent}
     response = requests.get(request_url, headers=headers)
     data = response.json()
-    return data[0]["tag_name"]
+    if (
+        data is not None
+        and len(data) > 0
+        and data[0] is not None
+        and "tag_name" in data[0]
+    ):
+        return str(data[0]["tag_name"])
+    else:
+        raise ValueError("Could not get latest github version")