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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def encodeEntitiesReentrant(self, input):
 """Do a global encoding of a string, replacing the predefined entities and non ASCII values with their entities and CharRef counterparts. Contrary to xmlEncodeEntities, this routine is reentrant, and result must be deallocated. """

        ret = libxml2mod.xmlEncodeEntitiesReentrant(self._o, input)
        return ret