The easiest way to start working with this extension with pip:

$ pip install flask-jwt-extended

If you want to use asymmetric (public/private) key signing algorithms, include the asymmetric_crypto extra requirements.

$ pip install flask-jwt-extended[asymmetric_crypto]

Note that if you are using ZSH (probably other shells as well), you will need to escape the brackets

$ pip install flask-jwt-extended\[asymmetric_crypto\]

If you prefer to install from source, you can clone this repo and run

$ python install