晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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Quickstart
==========

First, :doc:`Install pip <installing>`.

Install a package from `PyPI`_:

::

  $ pip install SomePackage
    [...]
    Successfully installed SomePackage

Show what files were installed:

::

  $ pip show --files SomePackage
    Name: SomePackage
    Version: 1.0
    Location: /my/env/lib/pythonx.x/site-packages
    Files:
     ../somepackage/__init__.py
     [...]

List what packages are outdated:

::

  $ pip list --outdated
    SomePackage (Current: 1.0 Latest: 2.0)

Upgrade a package:

::

  $ pip install --upgrade SomePackage
    [...]
    Found existing installation: SomePackage 1.0
    Uninstalling SomePackage:
      Successfully uninstalled SomePackage
    Running setup.py install for SomePackage
    Successfully installed SomePackage

Uninstall a package:

::

  $ pip uninstall SomePackage
    Uninstalling SomePackage:
      /my/env/lib/pythonx.x/site-packages/somepackage
    Proceed (y/n)? y
    Successfully uninstalled SomePackage


.. _PyPI: http://pypi.python.org/pypi/