问题
I'm trying to get virtualenv to work with the fish shell. I have virtualenv installed and it works fine with bash and zsh. However, running the following command returns fish: Unknown command 'source':
$ source ~/path/to/bin/activate
Does anyone know how to get virtualenv and the fish shell to work together. Thanks in advance.
回答1:
You don't need to activate to use virtualenv it is a convenience. You can just use the virtualenv directly:
virtualenv venv
./venv/bin/pip install foo
Have you tried from fish using:
. venv/bin/activate.fish
It probably isn't as widely used as bash so may have issues - looking at the commit history shows a recent fix:
https://github.com/pypa/virtualenv/blob/master/virtualenv_embedded/activate.fish
回答2:
You can also use this : https://github.com/adambrenecki/virtualfish
It allows you to activate a virtualenv by typing this :
vf activate <my_env>
回答3:
You can use virtualfish.
A Fish Shell wrapper for Ian Bicking’s virtualenv, somewhat loosely based on Doug Hellman’s virtualenvwrapper for Bourne-compatible shells.
Source: https://github.com/adambrenecki/virtualfish
Docs: http://virtualfish.readthedocs.org/en/latest/
回答4:
For virtualenv, fish has a separate activation file in the in the bin directory with .fish extension.
So you will have to do:
$ source ~/path/to/bin/activate.fish
回答5:
If you can't use activate.fish, you can just add the bin directory to your PATH:
set -gx PATH /path/to/virtualenv/bin $PATH
That's pretty much all activate.fish does (well, not quite, it also unsets PYTHONHOME, (which wasn't set beforehand when I tried it anyway, YMMV); and it tries to mess with your fish_prompt).
Alternatively: I'm a former Bash user who's started using Fish and misses Doug Hellman's virtualenvwrapper, so I've just today started working on a replacement called virtualfish - it has a few handy shortcuts you might find useful, although it's nowhere near as complete as VEW.
回答6:
(This thread seems close to be closed, but I found a solution :)
To enter a new fish shell with venv envrionment:
begin; set -lx PATH (realpath ./venv)/bin $PATH; fish; end
when the venv directory is ./venv.
To deactivate, just ctrl-d or exit.
Another solution, which does not invoke a child shell.
Make and enter a venv envrionment:
python3 -m venv ./venv
set -lx PATH (realpath ./venv)/bin $PATH
Exit from the envrionment:
set -lx PATH $PATH[2..-1]
来源：https://stackoverflow.com/questions/10956335/how-to-get-virtualenv-to-work-with-fish-shell