ubuntu 安装 pythonenv

This will get you going with the latest version of pyenv and make it easy to fork and contribute any changes back upstream.

Check out pyenv where you want it installed. A good place to choose is

$HOME/.pyenv

(but you can install it somewhere else).

$ git clone https://github.com/yyuu/pyenv.git ~/.pyenv

Define environment variable

PYENV_ROOT

to point to the path where pyenv repo is cloned and add

$PYENV_ROOT/bin

to your

$PATH

for access to the

pyenv

command-line utility.

$ echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile
$ echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile

Zsh note: Modify your

~/.zshenv

file instead of

~/.bash_profile

. Ubuntu note: Modify your

~/.bashrc

file instead of

~/.bash_profile

.

Add

pyenv init

to your shell to enable shims and autocompletion. Please make sure

eval "$(pyenv init -)"

is placed toward the end of the shell configuration file since it manipulates

PATH

during the initialization.

$ echo 'eval "$(pyenv init -)"' >> ~/.bash_profile

Zsh note: Modify your

~/.zshenv

file instead of

~/.bash_profile

. Ubuntu note: Modify your

~/.bashrc

file instead of

~/.bash_profile

.

General warning: There are some systems where the

BASH_ENV

variable is configured to point to

.bashrc

. On such systems you should almost certainly put the abovementioned line

eval "$(pyenv init -)

into

.bash_profile

, andnot into

.bashrc

. Otherwise you may observe strange behaviour, such as

pyenv

getting into an infinite loop. See #264for details.

Restart your shell so the path changes take effect. You can now begin using pyenv.

$ exec $SHELL

Install Python versions into

$PYENV_ROOT/versions

. For example, to download and install Python 2.7.8, run:

$ pyenv install 2.7.8