Merge pull request #4542 from RatanShreshtha/3.0

Added type hints for help.py.

requests/help.py

@@ -10,6 +10,8 @@ import idna
 import urllib3
 import chardet
 
+from typing import Dict
+
 from . import __version__ as requests_version
 
 try:
@@ -23,7 +25,7 @@ else:
     import cryptography
 
 
-def _implementation():
+def _implementation() -> Dict:
     """Return a dict with the Python implementation and version.
 
     Provide both the name and the version of the Python implementation
@@ -56,7 +58,7 @@ def _implementation():
     return {'name': implementation, 'version': implementation_version}
 
 
-def info():
+def info() -> Dict:
     """Generate information for a bug report."""
     try:
         platform_info = {