Pyenv Concepts: Difference between revisions
| Line 15: | Line 15: | ||
# The first <code>.python-version</code> file found by searching each parent directory up to the filesystem root. | # The first <code>.python-version</code> file found by searching each parent directory up to the filesystem root. | ||
# The global <code>$(pyenv root)/version</code> file. | # The global <code>$(pyenv root)/version</code> file. | ||
Also see <code>[[Pyenv_Operatons#shell|pyenv shell]]</code>, <code>[[Pyenv_Operatons#local|pyenv local]]</code>, and <code>[[Pyenv_Operatons#global|pyenv global]]</code> commands. | |||
=<tt>pyenv</tt> and <tt>brew</tt>= | =<tt>pyenv</tt> and <tt>brew</tt>= | ||
Revision as of 00:56, 3 November 2023
Internal
Overview
pyenv is a tool that let you switch between multiple version of Python.
pyenv lets you change the global Python version on a per-user basis. It also provides support for per-project Python versions. It allows you to override the Python version with an environment variables.
pyenv works by intercepting Python commands using shim executables injected in PATH, determines which Python version has been specified by your application and passes the command along to the correct Python installation.
Version Selection
The intercepting pyenv shim determines what Python version is needed by looking at the following sources, in this order:
PYENV_VERSION- The application-specific
.python-versionin the current directory. - The first
.python-versionfile found by searching each parent directory up to the filesystem root. - The global
$(pyenv root)/versionfile.
Also see pyenv shell, pyenv local, and pyenv global commands.
pyenv and brew
brew also lets you install different Python versions on the same system:
TO PROCESS: https://stackoverflow.com/a/30580166
What Happens if pyenv Installs a new Python Version
pyenv install 3.9.9 python-build: use openssl@1.1 from homebrew python-build: use readline from homebrew Downloading Python-3.9.9.tar.xz... -> https://www.python.org/ftp/python/3.9.9/Python-3.9.9.tar.xz Installing Python-3.9.9... python-build: use tcl-tk from homebrew python-build: use readline from homebrew python-build: use ncurses from homebrew python-build: use zlib from xcode sdk Installed Python-3.9.9 to /Users/ovidiu/.pyenv/versions/3.9.9