How to create a virtual environment with Anaconda

Anything is fine for the time being, so Anaconda must be included.

Create a virtual environment

conda create -n Virtual environment name python = x.x List the packages to install (delimiter is space)

Example)

conda create -n py27 python=2.7 anaconda

You will be asked Proceed ([y] | n) ?, so press y

Checking the virtual environment

conda info -e

# conda environments:
#
chainer                  /home/user/anaconda2/envs/chainer
py27                     /home/user/anaconda2/envs/py27
py35                     /home/user/anaconda2/envs/py35
tensorflow               /home/user/anaconda2/envs/tensorflow
root                  *  /home/user/anaconda2

Delete virtual environment

conda remove -n py27 --all

conda info -e

# conda environments:
#
chainer                  /home/user/anaconda2/envs/chainer
py35                     /home/user/anaconda2/envs/py35
tensorflow               /home/user/anaconda2/envs/tensorflow
root                  *  /home/user/anaconda2

Make the virtual environment Active

user@MYPC:~$ source activate py27
discarding /home/user/anaconda2/bin from PATH
prepending /home/user/anaconda2/envs/py27/bin to PATH
(py27)user@MYPC:~$ conda info -e
# conda environments:
#
chainer                  /home/user/anaconda2/envs/chainer
py27                  *  /home/user/anaconda2/envs/py27
py35                     /home/user/anaconda2/envs/py35
tensorflow               /home/user/anaconda2/envs/tensorflow
root                     /home/user/anaconda2

For windows, use ʻactivate py27` to activate

Make the virtual environment inactive

(py27)user@MYPC:~$ source deactivate
discarding /home/user/anaconda2/envs/py27/bin from PATH
user@MYPC:~$ conda info -e
# conda environments:
#
chainer                  /home/user/anaconda2/envs/chainer
py27                     /home/user/anaconda2/envs/py27
py35                     /home/user/anaconda2/envs/py35
tensorflow               /home/user/anaconda2/envs/tensorflow
root                  *  /home/user/anaconda2

For windows, deactivate with deactivate

Details are written in the following document conda document

testing environment: OS: Ubuntu 14.04 LTE

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