def __init__(self, grammar, trace=0, **property_names):
"""
Create a new C{BottomUpPCFGChartParser}, that uses C{grammar}
to parse texts.
@type grammar: C{PCFG}
@param grammar: The grammar used to parse texts.
@type trace: C{int}
@param trace: The level of tracing that should be used when
parsing a text. C{0} will generate no tracing output;
and higher numbers will produce more verbose tracing
output.
"""
assert _chktype(1, grammar, PCFG)
assert _chktype(2, trace, types.IntType)
self._grammar = grammar
self._trace = trace
AbstractParser.__init__(self, **property_names)
def __init__(self, grammar, trace=0, guessUnknown=0, spellchecker=None, **property_names):
"""
Create a new C{ViterbiPCFGParser}, that uses {grammar} to
parse texts.
@type grammar: C{PCFG}
@param grammar: The grammar used to parse texts.
@type trace: C{int}
@param trace: The level of tracing that should be used when
parsing a text. C{0} will generate no tracing output;
and higher numbers will produce more verbose tracing
output.
"""
assert _chktype(1, grammar, PCFG)
assert _chktype(2, trace, types.IntType)
self._grammar = grammar
self._trace = trace
self._guessUnknown = guessUnknown
self._guessKnown = 0
self._spellchecker = spellchecker
AbstractParser.__init__(self, **property_names)