mac os python run command line variables

python-version file found (if any) by searching each parentĭirectory, until reaching the root of your filesystem. python-version file with the pyenv local python-version file in the currentĭirectory (if present). The pyenv shell command to set this environment The PYENV_VERSION environment variable (if specified). Reading it from the following sources, in this order: When you execute a shim, pyenv determines which Python version to use by Run the shim named pip, which in turn passes the command along to.Find the pyenv shim named pip at the beginning of your PATH.Search your PATH for an executable file named pip.So with pyenv installed, when you run, say, pip, your Shims are lightweight executables that simply pass your command along Through a process called rehashing, pyenv maintains shims in thatĭirectory to match every Python command across every installed version $(pyenv root)/shims:/usr/local/bin:/usr/bin:/bin This list of directories lives in an environment variableĬalled PATH, with each directory in the list separated by a colon: Searches through a list of directories to find an executable file with When you run a command like python or pip, your operating system Has been specified by your application, and passes your commands along Of course, you can create virtualenvĪt a high level, pyenv intercepts Python commands using shimĮxecutables injected into your PATH, determines which Python version Instead, pyenv's shimĪpproach works by adding a directory to your $PATH. In contrast with pythonbrew and pythonz, pyenv does not. This may be helpful to test across Python versions with tox. Searches for commands from multiple versions of Python at a time.Allows you to override the Python version with an environment.Provides support for per-project Python versions.Lets you change the global Python version on a per-user basis.

Simple, unobtrusive, and follows the UNIX tradition of single-purpose

Pyenv lets you easily switch between multiple versions of Python.

Mac os python run command line variables