Python and Virtualenv on Windows

25
votes

How do you install virtualenv correctly on windows?

I downloaded virtualenv1.9.1 from here and tried installing it with:

python virtualenv.py install

but it does not appear in MyPythonPath/Scripts

I tried the same way installing virutalenvwrapper-win and it installed correctly. But I can't use it because I don't have virtualenv

python.exe: can't open file 'MyPythonPath\Scripts\virtualenv-script.py': [Errno 2 ] No such file or directory

5
pythonvirtualenv
For Python v3 you probably want pyvenv which can be found from this SO question: stackoverflow.com/questions/15981111/… - icc97

5 Answers

23
votes

The suggested way to install Python packages is to use pip

Please follow this documentation to install pip: https://pip.pypa.io/en/latest/installing/

Note: Python 2.7.9 and above, and Python 3.4 and above include pip already.

Then install virtualenv:

pip install virtualenv
11
votes

Since I got the same error as mentioned in the question inspite of installing with:

pip install virtualenv

I would like to add a few points, that might also help someone else solve the error in a similar way as me. Don't know if that's the best way, but for me nothing else helped.

Install virtualenv

pip install virtualenv

Move into Scripts directory

cd C:\Python27\Scripts

Create a virtual env.

python virtualenv.exe my_env

Activate the virtual env.

my_env\Scripts\activate.bat

Deactivate the virtual env.

my_env\Scripts\deactivate.bat
3
votes

There is an other way to install Python packages.

1: download the package, you want
2: open commander (press the win start-button and search for cmd)
3: cd into the folder where you downloaded your package
4: type: "python setup.py install"

3
votes

  1. install virtualenv

    pip install virtualenv

  2. create a virtual environment

    python -m virtualenv demoEnv

  3. Activate the environment

    demoEnv\Scripts\activate

  4. To deactivate

    deactivate

2
votes

For installing virtualenv, you'll have to either install it using pip as mentioned in the answer by woozyking or you'll have to do something like this:

$ curl -O https://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.9.1.tar.gz
$ tar xvfz virtualenv-1.9.1.tar.gz
$ cd virtualenv-1.9.1
$ [sudo] python setup.py install

The command which you have used can be used to create a virtualenv. I would recommend you go through these small videos on virtualenv and virtualenvwrapper to get a better understanding:

python-power-tools-virtualenv

virtualenvwrapper