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。 .
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<h1>“Why is Python Installed on my Computer?” FAQ<a class="headerlink" href="#why-is-python-installed-on-my-computer-faq" title="Permalink to this headline">¶</a></h1>
<div class="section" id="what-is-python">
<h2>What is Python?<a class="headerlink" href="#what-is-python" title="Permalink to this headline">¶</a></h2>
<p>Python is a programming language.  It’s used for many different applications.
It’s used in some high schools and colleges as an introductory programming
language because Python is easy to learn, but it’s also used by professional
software developers at places such as Google, NASA, and Lucasfilm Ltd.</p>
<p>If you wish to learn more about Python, start with the <a class="reference external" href="https://wiki.python.org/moin/BeginnersGuide">Beginner’s Guide to
Python</a>.</p>
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<h2>Why is Python installed on my machine?<a class="headerlink" href="#why-is-python-installed-on-my-machine" title="Permalink to this headline">¶</a></h2>
<p>If you find Python installed on your system but don’t remember installing it,
there are several possible ways it could have gotten there.</p>
<ul class="simple">
<li>Perhaps another user on the computer wanted to learn programming and installed
it; you’ll have to figure out who’s been using the machine and might have
installed it.</li>
<li>A third-party application installed on the machine might have been written in
Python and included a Python installation.  There are many such applications,
from GUI programs to network servers and administrative scripts.</li>
<li>Some Windows machines also have Python installed.  At this writing we’re aware
of computers from Hewlett-Packard and Compaq that include Python.  Apparently
some of HP/Compaq’s administrative tools are written in Python.</li>
<li>Many Unix-compatible operating systems, such as Mac OS X and some Linux
distributions, have Python installed by default; it’s included in the base
installation.</li>
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<div class="section" id="can-i-delete-python">
<h2>Can I delete Python?<a class="headerlink" href="#can-i-delete-python" title="Permalink to this headline">¶</a></h2>
<p>That depends on where Python came from.</p>
<p>If someone installed it deliberately, you can remove it without hurting
anything.  On Windows, use the Add/Remove Programs icon in the Control Panel.</p>
<p>If Python was installed by a third-party application, you can also remove it,
but that application will no longer work.  You should use that application’s
uninstaller rather than removing Python directly.</p>
<p>If Python came with your operating system, removing it is not recommended.  If
you remove it, whatever tools were written in Python will no longer run, and
some of them might be important to you.  Reinstalling the whole system would
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