nltk.SteppingShiftReduceParser.reduce¶
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SteppingShiftReduceParser.
reduce
(production=None)[source]¶ Use
production
to combine the rightmost stack elements into a single Tree. Ifproduction
does not match the rightmost stack elements, then do nothing.Returns: The production used to reduce the stack, if a reduction was performed. If no reduction was performed, return None. Return type: Production or None