Question 38920 in Ubuntu Question posted in
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ImportError: cannot import name 'TimedJSONWebSignatureSerializer' from 'itsdangerous' – Ubuntu

I’m running a flask app using itsdangerous python package in AWS EC2 instance.

Traceback (most recent call last):
  File "run.py", line 4, in <module>
    app = create_app()
  File "/home/ubuntu/RHS_US/application/portal/__init__.py", line 29, in create_app
    from portal.users.routes import users
  File "/home/ubuntu/RHS_US/application/portal/users/routes.py", line 7, in <module>
    from portal.models import User
  File "/home/ubuntu/RHS_US/application/portal/models.py", line 7, in <module>
    from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
ImportError: cannot import name 'TimedJSONWebSignatureSerializer' from 'itsdangerous' (/home/ubuntu/.local/lib/python3.7/site-packages/itsdangerous/__init__.py)

Any resolution for this?

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3

Answers


  1. 0

    In the latest version of itsdangerous, TimedJSONWebSignatureSerializer is no longer available. Try this instead. It worked for me. from itsdangerous import URLSafeTimedSerializer as Serializer

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  2. 0

    Itsdangerous is a very common and popular package used for serialization in other packages and apps.
    To fix this:

    1. Upgrade your Flask to the newest version — pip install flask –upgrade
    2. Downgrade itsdangerous to version 2.0.1 — pip install itsdangerous==2.0.1
    3. After downgrading it, install email_validator again to make the issue fixed — pip install email_validator

    I hope this fixes the issue for you. Happy Coding

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  3. 0

    First make sure to re-install and update itsdangerous.
    pip install -U itsdangerous

    Then what you want to do is

     from itsdangerous.url_safe import URLSafeTimedSerializer as Serializer

    This works well.

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