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prezto/modules/python/README.md
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Python

Enables local Python and local Python package installation.

Local Python Installation

pyenv builds and installs multiple Python versions locally in the home directory.

This module prepends the pyenv directory to the path variable to enable the execution of pyenv.

Usage

Install Python versions with pyenv install into ~/.pyenv/versions.

Local Package Installation

Since version 2.6, Python supports per user package installation, as defined in PEP 370.

This module prepends per user site directories to the relevant path variables to enable the execution of user installed scripts and the reading of documentation.

Usage

Install packages into the per user site directory with easy_install --user or pip install --user.

virtualenvwrapper

virtualenvwrapper is a frontend to the popular virtualenv utility.

virtualenv creates isolated Python environments and virtualenvwrapper provides convenient shell functions to create, switch, and manage them.

Usage

Install virtualenvwrapper.

Virtual environments are stored in ~/.virtualenvs.

There are configuration variables that have to be set to enable certain features. If you wish to use these features, export the variables in ~/.zshenv

The variable $PROJECT_HOME tells virtualenvwrapper where to place project working directories. It must be set and the directory created before mkproject is used. Replace Developer with your projects directory.

export PROJECT_HOME="$HOME/Developer"

The variable $VIRTUALENVWRAPPER_VIRTUALENV_ARGS tells virtualenvwrapper what arguments to pass to virtualenv. For example, set the value to --no-site-packages to ensure that all new environments are isolated from the system site-packages directory.

export VIRTUALENVWRAPPER_VIRTUALENV_ARGS='--no-site-packages'

Aliases

  • py is short for python.

Functions

  • python-info exposes information about the Python environment via the $python_info associative array.

Theming

To display the name of the current virtual enviroment in a prompt, define the following style in the prompt_name_setup function.

# %v - virtualenv name.
zstyle ':prezto:module:python:info:virtualenv' format 'virtualenv:%v'

Then add $python_info[virtualenv] to $PROMPT or $RPROMPT and call python-info in the prompt_name_preexec hook function.

Authors

The authors of this module should be contacted via the issue tracker.