Update python_example.py
Update python_example.py

Added comment to prevent future users from running into issues
looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples