— Creation of virtual environments

Creating virtual environments¶

venv

python -m venv /path/to/new/virtual/environment

pyvenv.cfghome.venvbinScriptslib/pythonX.Y/site-packagesLib\site-packages

pyvenv

venv

venv

c:\>c:\Python35\python -m venv c:\path\to\myenv

PATHPATHEXT

c:\>python -m venv c:\path\to\myenv

-h

usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
            [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps]
            ENV_DIR [ENV_DIR ...]

Creates virtual Python environments in one or more target directories.

positional arguments:
  ENV_DIR               A directory to create the environment in.

optional arguments:
  -h, --help            show this help message and exit
  --system-site-packages
                        Give the virtual environment access to the system
                        site-packages dir.
  --symlinks            Try to use symlinks rather than copies, when symlinks
                        are not the default for the platform.
  --copies              Try to use copies rather than symlinks, even when
                        symlinks are the default for the platform.
  --clear               Delete the contents of the environment directory if it
                        already exists, before environment creation.
  --upgrade             Upgrade the environment directory to use this version
                        of Python, assuming Python has been upgraded in-place.
  --without-pip         Skips installing or upgrading pip in the virtual
                        environment (pip is bootstrapped by default)
  --prompt PROMPT       Provides an alternative prompt prefix for this
                        environment.
  --upgrade-deps        Upgrade core dependencies: pip setuptools to the
                        latest version in PyPI

Once an environment has been created, you may wish to activate it, e.g. by
sourcing an activate script in its bin directory.

--upgrade-deps

--without-pip--copies

--clear--upgrade

python.exe

Activate.ps1

pyvenv.cfginclude-system-site-packagestruevenv--system-site-packagesfalse

--without-pipensurepippip

venv