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Update README about usage with multiple versions (#92)

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Yamashita Yuu 2014-01-29 18:00:56 +09:00
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README.md
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@ -299,21 +299,38 @@ file named `.pyenv-version`. For backwards compatibility, pyenv will
read a local version specified in an `.pyenv-version` file, but a read a local version specified in an `.pyenv-version` file, but a
`.python-version` file in the same directory will take precedence. `.python-version` file in the same directory will take precedence.
**pyenv feature** #### pyenv local (advanced)
You can specify multiple versions as local Python. Commands You can specify multiple versions as local Python at once.
within these Python versions are searched by specified order.
Let's say if you have two versions of 2.7.6 and 3.3.3. If you prefer 2.7.6 over 3.3.3,
$ pyenv local 2.7.6 3.3.3 $ pyenv local 2.7.6 3.3.3
$ pyenv local $ pyenv versions
2.7.6 system
3.3.3 * 2.7.6 (set by /Users/yyuu/path/to/project/.python-version)
$ pyenv which python2.7 * 3.3.3 (set by /Users/yyuu/path/to/project/.python-version)
/home/yyuu/.pyenv/versions/2.7.6/bin/python2.7 $ python --version
$ pyenv which python3.3 Python 2.7.6
/home/yyuu/.pyenv/versions/3.3.3/bin/python3.3 $ python2.7 --version
$ pyenv which python Python 2.7.6
/home/yyuu/.pyenv/versions/2.7.6/bin/python $ python3.3 --version
Python 3.3.3
or, if you prefer 3.3.3 over 2.7.6,
$ pyenv local 3.3.3 2.7.6
$ pyenv versions
system
* 2.7.6 (set by /Users/yyuu/path/to/project/.python-version)
* 3.3.3 (set by /Users/yyuu/path/to/project/.python-version)
venv27
$ python --version
Python 3.3.3
$ python2.7 --version
Python 2.7.6
$ python3.3 --version
Python 3.3.3
### pyenv global ### pyenv global
@ -330,21 +347,38 @@ The special version name `system` tells pyenv to use the system Python
When run without a version number, `pyenv global` reports the When run without a version number, `pyenv global` reports the
currently configured global version. currently configured global version.
**pyenv feature** #### pyenv global (advanced)
You can specify multiple versions as global Python. Commands You can specify multiple versions as global Python at once.
within these Python versions are searched by specified order.
Let's say if you have two versions of 2.7.6 and 3.3.3. If you prefer 2.7.6 over 3.3.3,
$ pyenv global 2.7.6 3.3.3 $ pyenv global 2.7.6 3.3.3
$ pyenv global $ pyenv versions
2.7.6 system
3.3.3 * 2.7.6 (set by /Users/yyuu/.pyenv/version)
$ pyenv which python2.7 * 3.3.3 (set by /Users/yyuu/.pyenv/version)
/home/yyuu/.pyenv/versions/2.7.6/bin/python2.7 $ python --version
$ pyenv which python3.3 Python 2.7.6
/home/yyuu/.pyenv/versions/3.3.3/bin/python3.3 $ python2.7 --version
$ pyenv which python Python 2.7.6
/home/yyuu/.pyenv/versions/2.7.6/bin/python $ python3.3 --version
Python 3.3.3
or, if you prefer 3.3.3 over 2.7.6,
$ pyenv global 3.3.3 2.7.6
$ pyenv versions
system
* 2.7.6 (set by /Users/yyuu/.pyenv/version)
* 3.3.3 (set by /Users/yyuu/.pyenv/version)
venv27
$ python --version
Python 3.3.3
$ python2.7 --version
Python 2.7.6
$ python3.3 --version
Python 3.3.3
### pyenv shell ### pyenv shell
@ -366,17 +400,38 @@ prefer not to use shell integration, you may simply set the
$ export PYENV_VERSION=pypy-2.2.1 $ export PYENV_VERSION=pypy-2.2.1
**pyenv feature** #### pyenv shell (advanced)
You can specify multiple versions via `PYENV_VERSION` You can specify multiple versions via `PYENV_VERSION` at once.
environment variable in your shell.
$ pyenv shell pypy-2.2.1 2.7.6 Let's say if you have two versions of 2.7.6 and 3.3.3. If you prefer 2.7.6 over 3.3.3,
$ echo $PYENV_VERSION
pypy-2.2.1:2.7.6 $ pyenv shell 2.7.6 3.3.3
$ pyenv version $ pyenv versions
pypy-2.2.1 (set by PYENV_VERSION environment variable) system
2.7.6 (set by PYENV_VERSION environment variable) * 2.7.6 (set by PYENV_VERSION environment variable)
* 3.3.3 (set by PYENV_VERSION environment variable)
$ python --version
Python 2.7.6
$ python2.7 --version
Python 2.7.6
$ python3.3 --version
Python 3.3.3
or, if you prefer 3.3.3 over 2.7.6,
$ pyenv shell 3.3.3 2.7.6
$ pyenv versions
system
* 2.7.6 (set by PYENV_VERSION environment variable)
* 3.3.3 (set by PYENV_VERSION environment variable)
venv27
$ python --version
Python 3.3.3
$ python2.7 --version
Python 2.7.6
$ python3.3 --version
Python 3.3.3
### pyenv versions ### pyenv versions