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where module is the name of a Python module, and path is an optional
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present for packages: the key '__path__' has a list as its value which
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has the following attributes:
module -- name of the module;
name -- name of the object;
file -- file in which the object is defined;
lineno -- line in the file where the object's definition starts;
parent -- parent of this object, if any;
children -- nested objects contained in this object.
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methods -- mapping of method names to beginning line numbers.
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