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where module is the name of a Python module, and path is an optional
list of directories where the module is to be searched.  If present,
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defined via the from XXX import YYY construct).  The values are
instances of classes Class and Function.  One special key/value pair is
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The 'children' attribute is a dictionary mapping names to objects.

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Instances of Class describe classes with the attributes from _Object,
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    methods -- mapping of method names to beginning line numbers.
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