Uninstall python 2.7 mac sierra install#
Uninstall python 2.7 mac sierra full#

Once pyenv has determined which version of Python your application has specified, it passes the command along to the corresponding Python installation.Д®ach Python version is installed into its own directory under $(pyenv root)/versions.ДЇor example, you might have these versions installed:ДЄs far as pyenv is concerned, version names are simply the directories in $(pyenv root)/versions.

python-version file, separated by newlines or any whitespace. You can also specify multiple versions in a. pyenv which python2.5 (should display $(pyenv root)/versions/2.5/bin/python2.5), or pyenv which python3.4 (should display path to system Python3).

Uninstall python 2.7 mac sierra full#

At this point, one should be able to find the full executable path to each of these using pyenv which, e.g.

Uninstall python 2.7 mac sierra install#

For example, to set your path to first use your system Python and Python3 (set to 2.7.9 and 3.4.2 in this example), but also have Python 3.3.6, 3.2, and 2.5 available on your PATH, one would first pyenv install the missing versions, then set pyenv global system 3.3.6 3.2 2.5. This allows for parallel usage of Python2 and Python3, and is required with tools like tox. NOTE: You can activate multiple versions at the same time, including multiple versions of Python2 or Python3 simultaneously. (In other words, whatever version would run if pyenv weren't in your PATH.) If the global version file is not present, pyenv assumes you want to use the 'system' Python. You can modify this file using the pyenv global command. python-version file found (if any) by searching each parent directory, until reaching the root of your filesystem. python-version file with the pyenv local command. python-version file in the current directory (if present). You can use the pyenv shell command to set this environment variable in your current shell session. The PYENV_VERSION environment variable (if specified). When you execute a shim, pyenv determines which Python version to use by reading it from the following sources, in this order:

Run the shim named pip, which in turn passes the command along to pyenv.

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 operating system will do the following: Shims are lightweight executables that simply pass your command along to pyenv. Through a process called rehashing, pyenv maintains shims in that directory to match every Python command across every installed version of Python- python, pip, and so on. Pyenv works by inserting a directory of shims at the front of your PATH: $(pyenv root)/shims:/usr/local/bin:/usr/bin:/bin In this example, the /usr/local/bin directory will be searched first, then /usr/bin, then /bin. This list of directories lives in an environment variable called PATH, with each directory in the list separated by a colon: /usr/local/bin:/usr/bin:/binДirectories in PATH are searched from left to right, so a matching executable in a directory at the beginning of the list takes precedence over another one at the end. When you run a command like python or pip, your operating system searches through a list of directories to find an executable file with that name. Of course, you can create virtualenv yourself, or pyenv-virtualenv to automate the process.ДЄt a high level, pyenv intercepts Python commands using shim executables injected into your PATH, determines which Python version has been specified by your application, and passes your commands along to the correct Python installation.

Instead, pyenv's shim approach 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. Search commands from multiple versions of Python at a time.Allow you to override the Python version with an environment variable.

Provide support for per-project Python versions.Let you change the global Python version on a per-user basis.This project was forked from rbenv and ruby-build, and modified for Python. It's simple, unobtrusive, and follows the UNIX tradition of single-purpose tools that do one thing well. Pyenv lets you easily switch between multiple versions of Python.