python - 导入错误 : cannot import name 'TimedJSONWebSignatureSerializer' from 'itsdangerous'

Question

我在 AWS EC2 实例中使用 itsdangerous python 包运行一个 flask 应用程序。

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)

有什么解决办法吗？

Answer 1

首先确保重新安装和更新itsdangerous(因为不这样做很危险)

 pip install -U itsdangerous

那么你要做的就是

 from itsdangerous.url_safe import URLSafeTimedSerializer as Serializer

这很有效。