Fixing Black formatting

Author: violuke

requests_oauthlib/oauth2_session.py

@@ -353,7 +353,7 @@ def fetch_token(
             request_kwargs["params"] = dict(urldecode(body))
         else:
             raise ValueError("The method kwarg must be POST or GET.")
-            
+
         for hook in self.compliance_hook["access_token_request"]:
             log.debug("Invoking access_token_request hook %s.", hook)
             token_url, headers, request_kwargs = hook(