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39 lines
1.5 KiB
TeX
39 lines
1.5 KiB
TeX
\section{\module{copy_reg} ---
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Register \module{pickle} support functions}
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\declaremodule[copyreg]{standard}{copy_reg}
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\modulesynopsis{Register \module{pickle} support functions.}
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The \module{copy_reg} module provides support for the
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\refmodule{pickle}\refstmodindex{pickle} and
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\refmodule{cPickle}\refbimodindex{cPickle} modules. The
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\refmodule{copy}\refstmodindex{copy} module is likely to use this in the
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future as well. It provides configuration information about object
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constructors which are not classes. Such constructors may be factory
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functions or class instances.
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\begin{funcdesc}{constructor}{object}
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Declares \var{object} to be a valid constructor. If \var{object} is
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not callable (and hence not valid as a constructor), raises
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\exception{TypeError}.
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\end{funcdesc}
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\begin{funcdesc}{pickle}{type, function\optional{, constructor}}
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Declares that \var{function} should be used as a ``reduction''
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function for objects of type \var{type}; \var{type} should not a
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class object. \var{function} should return either a string or a
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tuple containing two or three elements.
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The optional \var{constructor} parameter, if provided, is a
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callable object which can be used to reconstruct the object when
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called with the tuple of arguments returned by \var{function} at
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pickling time. \exception{TypeError} will be raised if
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\var{object} is a class or \var{constructor} is not callable.
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See the \refmodule{pickle} module for more
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details on the interface expected of \var{function} and
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\var{constructor}.
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\end{funcdesc}
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