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<title>12.1.2 Formatter Implementations
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<H2><A NAME=
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12.1.2 Formatter Implementations
Two implementations of formatter objects are provided by this module.
Most applications may use one of these classes without modification or
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<td><nobr><b><span class=
"typelabel">class
</span> <tt id='l2h-
3810' xml:id='l2h-
3810'
class=
"class">NullFormatter
</tt></b>(
</nobr></td>
<td><var></var><big>[
</big><var>writer
</var><big>]
</big><var></var>)
</td></tr></table></dt>
A formatter which does nothing. If
<var>writer
</var> is omitted, a
<tt class=
"class">NullWriter
</tt> instance is created. No methods of the writer are
called by
<tt class=
"class">NullFormatter
</tt> instances. Implementations should
inherit from this class if implementing a writer interface but don't
need to inherit any implementation.
<dl><dt><table cellpadding=
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"0"><tr valign=
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<td><nobr><b><span class=
"typelabel">class
</span> <tt id='l2h-
3811' xml:id='l2h-
3811'
class=
"class">AbstractFormatter
</tt></b>(
</nobr></td>
<td><var>writer
</var>)
</td></tr></table></dt>
The standard formatter. This implementation has demonstrated wide
applicability to many writers, and may be used directly in most
circumstances. It has been used to implement a full-featured
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<span class=
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2.4.2, documentation updated on
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2005.
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