104 lines
3.2 KiB
Markdown
Executable File
104 lines
3.2 KiB
Markdown
Executable File
<h2><img src="https://seleniumbase.io/img/logo3a.png" title="SeleniumBase" width="32" /> Virtual Environment Tutorial</h2>
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There are multiple ways of creating a **[Python virtual environment](https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#creating-a-virtual-environment)**. This tutorial covers two of those:
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* The ``venv`` command (<i>included with Python 3+</i>).
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* The virtualenvwrapper ``mkvirtualenv`` command.
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``venv`` creates virtual environments in the location where run (<i>generally with Python projects</i>).
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``mkvirtualenv`` creates virtual environments in one place (<i>generally in your home directory</i>).
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(The [Python Software Foundation](https://www.python.org/psf/) recommends ``venv`` for creating virtual environments.)
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<h3><img src="https://seleniumbase.io/img/logo3a.png" title="SeleniumBase" width="32" /> Part 1: Using "venv"</h3>
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> macOS/Linux terminal (``python3 -m venv ENV``)
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```bash
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python3 -m venv sbase_env
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source sbase_env/bin/activate
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```
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> Windows CMD prompt (``py -m venv ENV``):
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```bash
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py -m venv sbase_env
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call sbase_env\\Scripts\\activate
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```
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To exit a virtual env, type ``deactivate``.
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--------
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<h3><img src="https://seleniumbase.io/img/logo3a.png" title="SeleniumBase" width="32" /> Part 2: Using virtualenvwrapper</h3>
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> macOS/Linux terminal:
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```bash
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python3 -m pip install virtualenvwrapper --force-reinstall
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export WORKON_HOME=$HOME/.virtualenvs
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source `which virtualenvwrapper.sh`
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```
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(*Shortcut*: Run ``source virtualenv_install.sh`` from the top-level SeleniumBase folder to perform the above steps.)
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(If you add ``source `which virtualenvwrapper.sh` `` to your local bash file (``~/.bash_profile`` on macOS, or ``~/.bashrc`` on Linux), virtualenvwrapper commands such as ``mkvirtualenv`` will be available whenever you open a new command prompt.)
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> Windows CMD prompt:
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```bash
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py -m pip install virtualenvwrapper-win --force-reinstall --user
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```
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(*Shortcut*: Run ``win_virtualenv.bat`` from the top-level SeleniumBase folder to perform the above step.)
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<h3>Create a virtual environment:</h3>
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* ``mkvirtualenv ENV``:
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```bash
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mkvirtualenv sbase_env
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```
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(If you have multiple versions of Python installed on your machine, and you want your virtual environment to use a specific Python version, add ``--python=PATH_TO_PYTHON_EXE`` to your ``mkvirtualenv`` command with the Python executable to use.)
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<h3><img src="https://seleniumbase.io/img/logo3a.png" title="SeleniumBase" width="32" /> virtualenvwrapper commands:</h3>
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Creating a virtual environment:
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```bash
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mkvirtualenv sbase_env
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```
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Leaving your virtual environment:
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```bash
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deactivate
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```
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Returning to a virtual environment:
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```bash
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workon sbase_env
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```
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Listing all virtual environments:
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```bash
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lsvirtualenv
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```
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Deleting a virtual environment:
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```bash
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rmvirtualenv sbase_env
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```
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--------
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> <i>[python-guide.org/en/latest/dev/virtualenvs](http://docs.python-guide.org/en/latest/dev/virtualenvs/) has more information about Python virtual environments. For specific details about VirtualEnv and VirtualEnvWrapper, see [http://virtualenv.readthedocs.org/en/latest/](http://virtualenv.readthedocs.org/en/latest/) and [http://virtualenvwrapper.readthedocs.org/en/latest/](http://virtualenvwrapper.readthedocs.org/en/latest/).</i>
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