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This module contains useful functions for parsing and using XML data. For the
moment, there is only one function that can parse the data inside a processing
instruction and return a Python dictionary.
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Utility function that parses the data contained in an XML
processing instruction and returns a dictionary of keywords and their
associated values (most of the time, the processing instructions contain
data like ``keyword="value"``, if a keyword is not associated to a value,
for example ``keyword``, it will be associated to ``None``).
:param pi_data: data contained in an XML processing instruction.
:type pi_data: unicode
:returns: Dictionary of the keywords (Unicode strings) associated to
their values (Unicode strings) as they were defined in the
data.
:rtype: dict
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