Can't import flask because werkzeug
I am asumming, that the wrong version of Werkzeug was installed in the fist place. This usually happens, when you have 2 versions of python installed, and you use 'pip' for installing dependancies rather than using 'pip3'. Hope this helped!
When I use from flask import *, I get the error

ImportError: No module named werkzeug.exceptions

However, when I do pip freeze, I can see that Werkzeug==0.11.11 is indeed installed.  How can I fix this?