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

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”

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:Python27Scripts

Create a virtual env.

python virtualenv.exe my_env

Activate the virtual env.

my_envScriptsactivate.bat

Deactivate the virtual env.

my_envScriptsdeactivate.bat

1. install virtualenv

   pip install virtualenv

2. create a virtual environment

   python -m virtualenv demoEnv

3. Activate the environment

   demoEnvScriptsactivate

4. To deactivate

   deactivate

Creating a Virtual Environment on Windows

1. Create a virtual environment

python -m venv myenv

2. Activate

.myenvScriptsactivate

3. Extra information

• To disable write
  • deactivate
• These commands will also work on windows
  • myenvScriptsactivate
  • myenvScriptsactivate.bat
  • .myenvScriptsactivate.bat
• Be careful with slashes:
  • myenv/Scripts/activate.bat
• I prefer using this naming:
  • python -m venv .venv
  • .venvScriptsactivate

4. Screenshot

5. Sources

• https://code.visualstudio.com/docs/python/tutorial-django
• https://code.visualstudio.com/docs/python/tutorial-flask

CREATE VIRTUAL ENVIRONMENT:

For Python 3 version:

Command: python3 -m venv [environment_name]

Example: python3 -m venv my_virtual_environment

For Python 2 version:

Command: python -m [environment_name]

Example: python -m venv my_virtual_environment

ACTIVATE VIRTUAL ENVIRONMENT IN WINDOWS:

Go to the virtual environment directory then open cmd.

Command: [environment_name]Scriptsactivate

Example: my_virtual_environmentScriptsactivate