How can you secure sensitive information, like API keys, in a Flask or Django application?

  • Include them directly in the HTML templates.
  • Store them in cookies.
  • Store them in plaintext within the source code.
  • Use environment variables to store them and access via os module.
Sensitive information like API keys should never be stored in plaintext within the source code because it can be easily exposed. Using environment variables to store such information and accessing them via the os module is a secure practice.
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