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more troubleshooting

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Mark Pilgrim
2010-07-28 10:52:57 -04:00
parent 241b66f884
commit d8b2e4a67f
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installing-python.html
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<p>If you're using an account on a hosted server, your <abbr>ISP</abbr> may have already installed Python 3. If you&#8217;re running Linux at home, you may already have Python 3, too. Most popular GNU/Linux distributions come with Python 2 in the default installation; a small but growing number of distributions also include Python 3. Mac OS X includes a command-line version of Python 2, but as of this writing it does not include Python 3. Microsoft Windows does not come with any version of Python. But don&#8217;t despair! You can point-and-click your way through installing Python, regardless of what operating system you have.
<p>The easiest way to check for Python 3 on your Linux or Mac OS X system is to get to a command line. On Linux, look in your <b><code>Applications</code></b> menu for a program called <b><code>Terminal</code></b>. (It may be in a submenu like <b><code>Accessories</code></b> or <b><code>System</code></b>.) On Mac OS X, there is an application called <b><code>Terminal.app</code></b> in your <code>/Applications/Utilities/</code> folder. (<a href=troubleshooting.html#running-python-on-the-command-line>More command line help</a> is available in the appendix.)
<p>The easiest way to check for Python 3 on your Linux or Mac OS X system is <a href=troubleshooting.html#getting-to-the-command-line>from the command line</a>. Once you&#8217;re at a command line prompt, just type <kbd>python3</kbd> (all lowercase, no spaces), press <kbd>ENTER</kbd>, and see what happens. On my home Linux system, Python 3.1 is already installed, and this command gets me into the <i>Python <dfn>interactive shell</dfn></i>.
<p>Once you&#8217;re at a command line prompt, just type <kbd>python3</kbd> (all lowercase, no spaces) and see what happens. On my home Linux system, Python 3 is already installed, and this command gets me into the <i>Python <dfn>interactive shell</dfn></i>.
<pre class='nd screen'>
<pre class='nd screen cmdline'>
<samp class=p>mark@atlantis:~$ </samp><kbd>python3</kbd>
<samp>Python 3.0.1+ (r301:69556, Apr 15 2009, 17:25:52)
[GCC 4.3.3] on linux2
<samp>Python 3.1 (r31:73572, Jul 28 2009, 06:52:23)
[GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>></samp></pre>
@@ -43,7 +41,7 @@ Type "help", "copyright", "credits" or "license" for more information.
<p>My <a href=http://cornerhost.com/>web hosting provider</a> also runs Linux and provides command-line access, but my server does not have Python 3 installed. (Boo!)
<pre class='nd screen'>
<pre class='nd screen cmdline'>
<samp class=p>mark@manganese:~$ </samp><kbd>python3</kbd>
<samp>bash: python3: command not found</samp></pre>