cannot import name 'import_string' from 'werkzeug' [bug solution]

BUG

ImportError: cannot import name 'import_string' from 'werkzeug' (/home/cc/Desktop/test/alg/envi/lib/python3.8/site-packages/werkzeug/init.py)

cannot import name 'import_string' from 'werkzeug'

This happens because of version incompatibility.

from werkzeug.utils import import_stringimport werkzeugwerkzeug.import_string = import_stringimport flask_cache

Resolved

Change the version of Werkzeug to 0.16.1
Werkzeug==0.16.1
Problem solved

reason

The new version and the old version have different rules:
As follows:

from werkzeug import import_string

from werkzeug.utils import import_string

Change the unity to solve.

Reason
The rules of the new version and the old version are different:
As follows:

from werkzeug import import_string
from werkzeug.utils import import_string
It can be solved by changing the unity.

import_string

Importing objects based on strings
Freeware: ISC License
Features
Importing objects based on strings.This is useful if you want to use the import path as an endpoint or something similar.Import paths can be specified in dashed notation (.) or using a colon as an object separator (:).If silent is True, the return value will be None if the import fails.

Usage

import import_stringmodule = import_string('my_system.my_package.my_module')function = import_string('my_system.my_module:some_function')Class = import_string('my_system.my_module:SomeClass', silent=True) If path doesn't exist Class = None

Credits
This package was extracted from the werkzeug.utils module
This package was created with the cookie cutter and the audreyr/cookiecutter-pypackage project template.

Stable Release
To install import_string, run the following command in a terminal:

$ pip install import_string
This is the preferred way to install import_string as it will always install the latest stable version.

If you don't have pip installed, this Python installation guide can guide you through the process.

From Source
The source code for import_string can be downloaded from the Github repository.

You can clone the public repository:

$ git clone git://github.com/rochacbruno/import_string
or download the tarball:

$ curl -OL https://github.com/rochacbruno/import_string/tarball/master
Once you have a copy of the source code, you can install it with:

$ python setup.py install