Update pkg_resources/__init__.py

Author: DimitriPapadopoulos

pkg_resources/__init__.py

@@ -414,7 +414,7 @@ def _macos_vers(_cache=[]):
         if version == '':
             plist = '/System/Library/CoreServices/SystemVersion.plist'
             if os.path.exists(plist):
-                with open(plist, 'rb) as fh:
+                with open(plist, 'rb') as fh:
                     plist_content = plistlib.load(fh)
                 if 'ProductVersion' in plist_content:
                     version = plist_content['ProductVersion']