def setup_words(self, words):
"""
Instantiate the source of words.
"""
if self.using_features:
words = [icat.from_string(w) for w in words]
return self.input_source(words)
def parse(sentence, verbose=False, topcat='S', grammar=GRAMMAR,sep=' ', input_source=LinearWords,
use_features=False,show_chart=False,print_trees=True,return_chart=False,
trace_edges=True,
return_trees = False):
"""
Print out the parses of a sentence
Parameters
----------
sentence: list<string>
the words to be parsed.
Examples
--------
>>> parse(["the","pigeons",'are','punished','and','they','suffer'])
['the', 'pigeons', 'are', 'punished', 'and', 'they', 'suffer']
Parse 1:
S
S
Np
det the
Nn
n pigeons
cop are
ppart punished
conj and
S
Np
pn they
Vp
v suffer
1 parses
>>> parse(["the","pigeons",'are','punished','and','they','blink'])
['the', 'pigeons', 'are', 'punished', 'and', 'they', 'blink']
No parse
"""
if use_features:
grammar = features.make_feature_grammar()
topcat = icat.from_string(topcat)
v = Chart(sentence, verbose=verbose,grammar=grammar,input_source=input_source, using_features=use_features)
v.topcat = topcat
sols = v.solutions(topcat)
res = v.results(show_chart=show_chart,
print_trees=print_trees,
trace_edges=trace_edges)
silent = not (print_trees or show_chart)
if not silent:
print sentence
if show_chart:
v.show()
if print_trees:
i = 0
for e in sols:
for tree in v.trees(e):
i += 1
if print_trees:
print "Parse %d:" % i
print treestring(tree, tab=0, sep=sep),
if not silent:
if res['n_trees'] == 0:
print "No parse"
else:
print res['n_trees'], "parses"
if return_chart:
return v
else:
return None