Forums

Error creating virtualenv

I tried to create a virtualenv for a django app. That is the result:

21:27 ~ $ source virtualenvwrapper.sh                                                                                                                                           
21:29 ~ $ mkvirtualenv --python=python3.4 django16
Running virtualenv with interpreter /usr/bin/python3.4
Using base prefix '/usr'
New python executable in django16/bin/python3.4
Also creating executable in django16/bin/python
Failed to import the site module
Traceback (most recent call last):
  File "/home/gestionebeb/.virtualenvs/django16/lib/python3.4/site.py", line 67, in <module>
    import os
  File "/home/gestionebeb/.virtualenvs/django16/lib/python3.4/os.py", line 614, in <module>
    from _collections_abc import MutableMapping
ImportError: No module named '_collections_abc'
ERROR: The executable django16/bin/python3.4 is not functioning
ERROR: It thinks sys.prefix is '/home/gestionebeb/.virtualenvs' (should be '/home/gestionebeb/.virtualenvs/django16')
ERROR: virtualenv is not compatible with this system or executable
21:30 ~ $ workon django16
ERROR: Environment '/home/gestionebeb/.virtualenvs/django16' does not contain an activate script.
21:30 ~ $

Thanks for help

[edited by admin: formatting]

deleted-user-316071 | 7 posts | June 23, 2014, 9:43 p.m. | permalink

Hi there -- sorry about that, it looks like we have a bug in our virtualenv support for Python 3.4. Do you think you could use Python 3.3 until this is fixed?

Staff giles | 12063 posts | PythonAnywhere staff | June 24, 2014, 11:04 a.m. | permalink

Parts of the program use new python 3.4 features but I think it is not so difficult modifying them. I'll check it out

deleted-user-135598 | 4 posts | June 24, 2014, 12:21 p.m. | permalink

Parts of the program use new python 3.4 features but I think it is not so difficult modifying them. I'll check it out

deleted-user-316071 | 7 posts | June 24, 2014, 12:33 p.m. | permalink

OK, thanks. Let me know if you have any problems.

Staff giles | 12063 posts | PythonAnywhere staff | June 24, 2014, 2:36 p.m. | permalink

virtualenv is not compatible with Python 3.4. Python 3.4 has the same functionality built in:

python3.4 -m venv env_name

will create a virtualenv in the directory env_name.

There is a little weirdness at the moment: pip for the virtualenv gets installed to env_name/local/bin and that's not on the PATH for the virtualenv, so you need to use the full path to pip to run it.

Staff glenn | 9718 posts | PythonAnywhere staff | June 26, 2014, 3:06 p.m. | permalink

Some further experimentation:

python3.4 -m venv env_name --without-pip
source env_name/bin/activate
python3.4 -m ensurepip

produces a virtualenv with pip in the right place.

Staff glenn | 9718 posts | PythonAnywhere staff | June 26, 2014, 4:55 p.m. | permalink

Same issue, hope it gets fixed soon!

deleted-user-433854 | 23 posts | Oct. 13, 2014, 2:36 p.m. | permalink