Discover Flask, Part 17 - Virtualenvwrapper

In this part we'll add the virtualenvwrapper tool to better manage our project's environment.

Links:

[darknawg]

For anyone who wants this capability on the windows platform, there is virtualenvwrapper-env in the repos. You can install it with 'pip install virtualenvwrapper-win' and it works nicely.

[hermanmu]

In this part we'll add the virtualenvwrapper tool to better manage our project's environment.

[stevenjenkins]

Thanks for the great guides!

Had some problems with this as a Windows user. Thought i'd share how I got it working.


set

to the end of the venv activate.bat file. Hope this helps

[DavidJones-lpwz]

I think I had virtaualenv already installed as I have been using both Pyhton 2.7 and 3 for different tutorials, I got the same error as Keon Kim mentioned below and after running the export PATH command recommended in that SO thread and then doing a version check I get this:

david$ virtualenv --version
13.1.0
david$ sudo virtualenv venv
Password:
New python executable in venv/bin/python2.7
Also creating executable in venv/bin/python
Installing setuptools, pip, wheel...done.

so there are two versions of it now? Is this going to cause problems for me later?

[lastedgeco]

for windows - pip install virtualenvwrapper-win

[mtaquia]

Hi Michael, great tutorial . I wonder how the system remember the even after rebooting mi notebook?

[BryantRenaud]

Ugh...i'm back to the issue with "KeyError: 'APP_SETTINGS'" again...what am i doing wrong???? I'm on ubuntu

Traceback (most recent call last):
  File "manage.py", line 5, in <module>
    from app import app, db
  File "/home/bryant/flask-intro/app.py", line 11, in <module>
   
  File "/home/bryant/.virtualenvs/discover-flask/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'APP_SETTINGS'