Python plugin

The plugin adds several aliases for useful Python commands.

To use it, add python to the plugins array in your zshrc file:

plugins=(... python)

Aliases

Command	Description
`py`	Runs `python3`
`ipython`	Runs the appropriate `ipython` version according to the activated virtualenv
`pyfind`	Finds .py files recursively in the current directory
`pyclean [dirs]`	Deletes byte-code and cache files from a list of directories or the current one
`pygrep <text>`	Looks for `text` in `*.py` files in the current directory, recursively
`pyuserpaths`	Add user site-packages folders to `PYTHONPATH`, for Python 2 and 3
`pyserver`	Starts an HTTP server on the current directory (use `--directory` for a different one)

The plugin provides two utilities to manage Python venvs:

mkv [name]: make a new virtual environment called name (default: venv) in current directory.
vrun [name]: activate virtual environment called name (default: venv) in current directory.