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updated README
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Yamashita Yuu
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README.md
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README.md
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@ -7,12 +7,16 @@ tools that do one thing well.
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This project was forked from [rbenv](https://github.com/sstephenson/rbenv) and.
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[ruby-build](https://github.com/sstephenson/ruby-build) and modified for Python.
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<img src="http://gyazo.com/13719131550e2d53269ad38c8a0a1815.png?1346413840" width="841" height="448">
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### pyenv _does…_
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* Let you **change the global Python version** on a per-user basis.
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* Provide support for **per-project Python versions**.
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* Allow you to **override the Python version** with an environment
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variable.
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* Search commands from multiple versions of Python at a time.
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This may be helpful to test across Python versions with [tox](http://pypi.python.org/pypi/tox).
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## Table of Contents
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@ -20,7 +24,16 @@ This project was forked from [rbenv](https://github.com/sstephenson/rbenv) and.
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* [2 Installation](#section_2)
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* [2.1 Basic GitHub Checkout](#section_2.1)
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* [2.1.1 Upgrading](#section_2.1.1)
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* [2.2 Neckbeard Configuration](#section_2.3)
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* [3 Usage](#section_3)
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* [3.1 pyenv global](#section_3.1)
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* [3.2 pyenv local](#section_3.2)
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* [3.3 pyenv shell](#section_3.3)
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* [3.4 pyenv versions](#section_3.4)
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* [3.5 pyenv version](#section_3.5)
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* [3.6 pyenv rehash](#section_3.6)
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* [3.7 pyenv which](#section_3.7)
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* [3.8 pyenv whence](#section_3.8)
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* [4 Development](#section_4)
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* [4.1 Version History](#section_4.1)
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* [4.2 License](#section_4.2)
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@ -103,13 +116,155 @@ tag:
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$ git fetch
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$ git tag
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v0.1.0
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v0.1.1
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v0.1.2
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v0.2.0
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$ git checkout v0.2.0
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$ git checkout v0.1.0
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### <a name="section_2.2"></a> 2.2 Neckbeard Configuration
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Skip this section unless you must know what every line in your shell
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profile is doing.
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`pyenv init` is the only command that crosses the line of loading
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extra commands into your shell. Coming from rvm, some of you might be
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opposed to this idea. Here's what `pyenv init` actually does:
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1. Sets up your shims path. This is the only requirement for pyenv to
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function properly. You can do this by hand by prepending
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`~/.pyenv/shims` to your `$PATH`.
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2. Installs autocompletion. This is entirely optional but pretty
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useful. Sourcing `~/.pyenv/completions/pyenv.bash` will set that
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up. There is also a `~/.pyenv/completions/pyenv.zsh` for Zsh
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users.
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3. Rehashes shims. From time to time you'll need to rebuild your
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shim files. Doing this on init makes sure everything is up to
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date. You can always run `pyenv rehash` manually.
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4. Installs the sh dispatcher. This bit is also optional, but allows
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pyenv and plugins to change variables in your current shell, making
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commands like `pyenv shell` possible. The sh dispatcher doesn't do
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anything crazy like override `cd` or hack your shell prompt, but if
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for some reason you need `pyenv` to be a real script rather than a
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shell function, you can safely skip it.
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Run `pyenv init -` for yourself to see exactly what happens under the
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hood.
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## <a name="section_3"></a> 3 Usage
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Like `git`, the `pyenv` command delegates to subcommands based on its
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first argument. The most common subcommands are:
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### <a name="section_3.1"></a> 3.1 pyenv global
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Sets the global version of Python to be used in all shells by writing
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the version name to the `~/.pyenv/version` file. This version can be
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overridden by a per-project `.pyenv-version` file, or by setting the
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`PYENV_VERSION` environment variable.
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$ pyenv global 2.7.3
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The special version name `system` tells pyenv to use the system Python
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(detected by searching your `$PATH`).
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When run without a version number, `pyenv global` reports the
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currently configured global version.
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_pyenv extension_
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You can specify multiple versions for global Python. Commands within
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these versions are searched by specified order.
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$ pyenv global 2.7.3 3.2.3
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$ pyenv global
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2.7.3
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3.2.3
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### <a name="section_3.2"></a> 3.2 pyenv local
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Sets a local per-project Python version by writing the version name to
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an `.pyenv-version` file in the current directory. This version
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overrides the global, and can be overridden itself by setting the
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`PYENV_VERSION` environment variable or with the `pyenv shell`
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command.
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$ pyenv local rbx-1.2.4
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When run without a version number, `pyenv local` reports the currently
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configured local version. You can also unset the local version:
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$ pyenv local --unset
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_pyenv extension_
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You can specify multiple versions for local Python.
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### <a name="section_3.3"></a> 3.3 pyenv shell
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Sets a shell-specific Python version by setting the `PYENV_VERSION`
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environment variable in your shell. This version overrides both
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project-specific versions and the global version.
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$ pyenv shell pypy-1.9
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When run without a version number, `pyenv shell` reports the current
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value of `PYENV_VERSION`. You can also unset the shell version:
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$ pyenv shell --unset
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Note that you'll need pyenv's shell integration enabled (step 3 of
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the installation instructions) in order to use this command. If you
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prefer not to use shell integration, you may simply set the
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`PYENV_VERSION` variable yourself:
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$ export PYENV_VERSION=pypy-1.9
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### <a name="section_3.4"></a> 3.4 pyenv versions
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Lists all Python versions known to pyenv, and shows an asterisk next to
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the currently active version.
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$ pyenv versions
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2.5.6
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2.6.8
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* 2.7.3 (set by /home/yyuu/.pyenv/version)
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3.2.3
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jython-2.5.3
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pypy-1.9
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### <a name="section_3.5"></a> 3.5 pyenv version
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Displays the currently active Python version, along with information on
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how it was set.
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$ pyenv version
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2.7.3 (set by /home/yyuu/.pyenv/version)
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### <a name="section_3.6"></a> 3.6 pyenv rehash
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Installs shims for all Python binaries known to pyenv (i.e.,
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`~/.pyenv/versions/*/bin/*`). Run this command after you install a new
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version of Python, or install a gem that provides binaries.
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$ pyenv rehash
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### <a name="section_3.7"></a> 3.7 pyenv which
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Displays the full path to the binary that pyenv will execute when you
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run the given command.
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$ pyenv which python3.2
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/Users/sam/.pyenv/versions/3.2.3/bin/python3.2
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### <a name="section_3.8"></a> 3.8 pyenv whence
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Lists all Python versions with the given command installed.
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$ pyenv whence 2to3
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2.6.8
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2.7.3
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3.2.3
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## <a name="section_4"></a> 4 Development
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The pyenv source code is [hosted on
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