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国外python经典教材,python爱好者的首选

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<Pre>

<b>guess_type(</B><B><I>filename</I></b><b>)</b> </pRE>

<P>Guesses the MIME type of a file based on its filename or URL. Returns a tuple (<I><tt clASS="monofont">type</Tt></i>
<tt CLASs="monofont">, </tt><i><tt class="monofont">encoding</tt></i>
) in which <i><tt claSs="monofont">type</tT></i>
 is a string of the form type/subtype and <i><tT clasS="monofont">encoding</tt></i>
 is the program used to encode the data (for example, <TT CLass="monofont">compress</tT> or <TT Class="monofont">gzip</TT>). Returns (<I><Tt claSS="monofont">None</TT></i>
<tt class="monofont">, </tt><i><tt class="monofont">None</tt></I>
) if the type cannot be guessed.</p>

<pRe>

<b>guess_extension(</b><B><i>type</i></b><b>)</B> </pre>

<P>Guesses the standard file extension for a file based on its MIME type. Returns a string with the filename extension including the leading dot (<TT Class="monofont">.</TT>). Returns <TT clasS="monofont">None</TT>  for unknown types.</P>

<pre>

<b>init([</B><B><I>files</I></b><b>])</b> </pre>

<p>Initializes the module. <i><tt class="monofont">files</tt></i>
 is a sequence of filenames that are read to extract type information. These files contain lines that map a MIME type to a list of acceptable file suffixes such as the following:</p>

<pRe>

image/jpeg:   jpe jpeg jpg 
text/html:    htm html