fix(oauth2): cast id_token to string for mypy

Author: macastelaz

mypy.ini

@@ -57,6 +57,9 @@ ignore_missing_imports = True
 [mypy-grpc_status]
 ignore_missing_imports = True
 
+[mypy-jwt,jwt.*]
+ignore_missing_imports = True
+
 [mypy-ibis.*]
 ignore_missing_imports = True
 

packages/google-auth/google/oauth2/id_token.py

@@ -132,12 +132,15 @@ def verify_token(
     Returns:
         Mapping[str, Any]: The decoded token.
     """
+    if isinstance(id_token, bytes):
+        id_token = id_token.decode("utf-8")
+
     certs = _fetch_certs(request, certs_url)
 
     if "keys" in certs:
         try:
-            import jwt as jwt_lib  # type: ignore
-            from jwt.api_jwk import PyJWKSet  # type: ignore
+            import jwt as jwt_lib
+            from jwt.api_jwk import PyJWKSet
         except ImportError as caught_exc:  # pragma: NO COVER
             raise ImportError(
                 "The pyjwt library is not installed, please install the pyjwt package to use the jwk certs format."