pyenv - wbwangk/wbwangk.github.io GitHub Wiki
使用 pyenv 可以在一个系统中安装多个python版本。 This project used to be known as pythonbrew, but is now known as pyenv. To install it you need to clone a copy of it into your $HOME directory like so(下载pyenv):
$ git clone git://github.com/yyuu/pyenv.git ~/.pyenv
Cloning into .pyenv...
remote: Counting objects: 2207, done.
remote: Compressing objects: 100% (617/617), done.
remote: Total 2207 (delta 1489), reused 2172 (delta 1462)
Receiving objects: 100% (2207/2207), 358.75 KiB, done.
Resolving deltas: 100% (1489/1489), done.
如root用户安装到了/root/.pyenv/目录下。
设置pyenv路径到~/.bashrc（.bashrc会在用户切换时自动执行）：
$ echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> .bashrc
$ echo 'eval "$(pyenv init -)"' >> .bashrc
查看pyenv帮助:
$ pyenv
pyenv 0.4.0-20130613-17-ge1ea64b
Usage: pyenv <command> [<args>]
Some useful pyenv commands are:
commands List all available pyenv commands
local Set or show the local application-specific Python version
global Set or show the global Python version
shell Set or show the shell-specific Python version
install Install a Python version using the python-build plugin
uninstall Uninstall a specific Python version
rehash Rehash pyenv shims (run this after installing executables)
version Show the current Python version and its origin
versions List all Python versions available to pyenv
which Display the full path to an executable
whence List all Python versions that contain the given executable
See `pyenv help <command>' for information on a specific command.
For full documentation, see: https://github.com/yyuu/pyenv#readme
看看有哪些python版本可以切换。星号表示当前版本:
$ pyenv versions
* system (set by /home/saml/.pyenv/version)
让我们安装Python 3.2.5:
$ pyenv install 3.2.5
Downloading Python-3.2.5.tgz...
-> http://yyuu.github.io/pythons/ed8d5529d2aebc36b53f4e0a0c9e6728
Installing Python-3.2.5...
Installed Python-3.2.5 to /home/saml/.pyenv/versions/3.2.5
Downloading setuptools-0.9.5.tar.gz...
-> https://pypi.python.org/packages/source/s/setuptools/setuptools-0.9.5.tar.gz
Installing setuptools-0.9.5...
Installed setuptools-0.9.5 to /home/saml/.pyenv/versions/3.2.5
Downloading pip-1.3.1.tar.gz...
-> http://yyuu.github.io/pythons/cbb27a191cebc58997c4da8513863153
Installing pip-1.3.1...
Installed pip-1.3.1 to /home/saml/.pyenv/versions/3.2.5
为新的安装重建环境：
$ pyenv rehash
现在可以看到两个版本了，system仍然是默认的(*)：
$ pyenv versions
* system (set by /home/saml/.pyenv/version)
3.2.5
让我们切换到3.2.5:
$ pyenv which python
/usr/bin/python
$ pyenv global 3.2.5
$ pyenv which python
/home/saml/.pyenv/versions/3.2.5/bin/python
$ pyenv versions
system
* 3.2.5 (set by /home/saml/.pyenv/version)
$ python --version
Python 3.2.5
星号(*)现在3.2.5的前面，表示默认(全局)版本是3.2.5。