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JSON Web Tokens (JWT) in Python

This example demonstrates the use of JSON Web Tokens (JWT) in Python using the jose library.


from jose import jwt

# Define a secret key for encoding and decoding the JWT
alice_secret_key = "alice_secret_key"

# Encode a JWT with a payload (data)
token = jwt.encode({"key": "value"}, alice_secret_key, algorithm="HS256")

# Decode the JWT to retrieve the original payload
decoded_payload = jwt.decode(token, alice_secret_key, algorithms=["HS256"])


JSON Web Tokens (JWT) are a compact, URL-safe means of representing claims to be transferred between two parties. In this example, we use the jose library to work with JWT in Python.

  • jwt.encode: This function is used to encode a JWT with a payload (data) and a secret key. In this example, we encode a JWT with a payload that contains a key-value pair.
  • jwt.decode: This function is used to decode a JWT and retrieve the original payload. It takes the encoded token, the secret key (used for decoding), and the supported algorithms as parameters.


JSON Web Tokens (JWT) are a widely used mechanism for securely transmitting information between parties. They are commonly used for user authentication and authorization in web applications and APIs. By understanding how to encode and decode JWTs, you can implement secure and efficient authentication and authorization mechanisms in your Python applications.