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venv/lib/python3.9/site-packages/requests_oauthlib/compliance_fixes/fitbit.py

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+"""
+The Fitbit API breaks from the OAuth2 RFC standard by returning an "errors"
+object list, rather than a single "error" string. This puts hooks in place so
+that oauthlib can process an error in the results from access token and refresh
+token responses. This is necessary to prevent getting the generic red herring
+MissingTokenError.
+"""
+
+from json import loads, dumps
+
+
+def fitbit_compliance_fix(session):
+    def _missing_error(r):
+        token = loads(r.text)
+        if "errors" in token:
+            # Set the error to the first one we have
+            token["error"] = token["errors"][0]["errorType"]
+        r._content = dumps(token).encode()
+        return r
+
+    session.register_compliance_hook("access_token_response", _missing_error)
+    session.register_compliance_hook("refresh_token_response", _missing_error)
+    return session