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4.7.1.4 StreamReaderWriter Objects
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<P>
The <tt class="class">StreamReaderWriter</tt> allows wrapping streams which work in
both read and write modes.
<P>
The design is such that one can use the factory functions returned by
the <tt class="function">lookup()</tt> function to construct the instance.
<P>
<dl><dt><b><a name='l2h-672'><tt class='class'>StreamReaderWriter</tt></a></b> (<var>stream, Reader, Writer, errors</var>)
<dd>
Creates a <tt class="class">StreamReaderWriter</tt> instance.
<var>stream</var> must be a file-like object.
<var>Reader</var> and <var>Writer</var> must be factory functions or classes
providing the <tt class="class">StreamReader</tt> and <tt class="class">StreamWriter</tt> interface
resp.
Error handling is done in the same way as defined for the
stream readers and writers.
</dl>
<P>
<tt class="class">StreamReaderWriter</tt> instances define the combined interfaces of
<tt class="class">StreamReader</tt> and <tt class="class">StreamWriter</tt> classes. They inherit
all other methods and attribute from the underlying stream.
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