Allow charset normalizer >=2 and <4 (#6261)

Author: deedy5

requests/__init__.py

@@ -80,8 +80,8 @@ def check_compatibility(urllib3_version, chardet_version, charset_normalizer_ver
     elif charset_normalizer_version:
         major, minor, patch = charset_normalizer_version.split(".")[:3]
         major, minor, patch = int(major), int(minor), int(patch)
-        # charset_normalizer >= 2.0.0 < 3.0.0
-        assert (2, 0, 0) <= (major, minor, patch) < (3, 0, 0)
+        # charset_normalizer >= 2.0.0 < 4.0.0
+        assert (2, 0, 0) <= (major, minor, patch) < (4, 0, 0)
     else:
         raise Exception("You need either charset_normalizer or chardet installed")
 

setup.cfg

@@ -5,7 +5,7 @@ provides-extra =
     use_chardet_on_py3
 requires-dist =
     certifi>=2017.4.17
-    charset_normalizer>=2,<3
+    charset_normalizer>=2,<4
     idna>=2.5,<4
     urllib3>=1.21.1,<1.27
 

setup.py

@@ -59,7 +59,7 @@ def run_tests(self):
     sys.exit()
 
 requires = [
-    "charset_normalizer>=2,<3",
+    "charset_normalizer>=2,<4",
     "idna>=2.5,<4",
     "urllib3>=1.21.1,<1.27",
     "certifi>=2017.4.17",