ImportError: Cannot Import Name Memoize

I have a little problem with project upgrade from Django 1.7.1 to 1.9.0. Every 'RemovedInDjango20Warning' has been fixed, but one thing still left and I don't know how to deal with

Solution 1:

The reason for this error, as has been stated, is that Django dropped memoize at some point, so the version of crispy-forms you were trying to use was not working with the Django version.

Solutions include trying a different version of Django, or trying a different version of crispy-forms. If you are using an unreleased version of Django, then there may not be a version of cripsy that supports it (yet).

However, your error ("cannot import name memoize"), can show up for released versions of Django - I had that error, and a search lead me to this ticket. The issue was that i was using an old version of crispy (1.4.1), and a recent version of Django (1.11.1).

To find a version of crispy to use, you can check the github release page:

https://github.com/django-crispy-forms/django-crispy-forms/releases

The release comments include some information about the Django version supported by different releases.