daviddoji/pytudes
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Python 3 fixes

Browse Source
This commit is contained in:
cclauss
2018-10-17 01:48:46 +02:00
parent 1697ee1c43
commit 6a8e87e17b
13 changed files with 140 additions and 116 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
py/parse.py
View File

@@ -1,3 +1,4 @@
from __future__ import print_function
grammar = {
'Noun': ['stench', 'wumpus'],
'Verb': ['is', 'smell'],
@@ -9,16 +10,16 @@ grammar = {
'Preposition': ['to', 'in'],
'Conjunction': ['and', 'or'],
'Digit': ['0', '1'],
'S': [['NP', 'VP'], ['S', 'Comjunction', 'S']],
'NP': ['Pronoun', 'Noun', ['Article', 'Noun'], ['Digit', 'Digit'],
'NP': ['Pronoun', 'Noun', ['Article', 'Noun'], ['Digit', 'Digit'],
['NP', 'PP'], ['NP', 'RelClause']],
'VP': ['Verb', ['VP', 'NP'], ['VP', 'Adjective'], ['VP', 'PP'],
'VP': ['Verb', ['VP', 'NP'], ['VP', 'Adjective'], ['VP', 'PP'],
['VP', 'Adverb']],
'PP': [['Preposition', 'NP']],
'RelClause': [['that', 'VP']]
}
def parse(forest, grammar):
if len(forest) == 1 and category(forest[0]) == 'S':
@@ -26,16 +27,16 @@ def parse(forest, grammar):
for i in range(len(forest)):
for lhs in grammar.keys():
for rhs in grammar[lhs]:
rhs = mklist(rhs)
n = len(rhs)
subsequence = forest[i:i+n]
if match(subsequence, rhs):
print subsequence, lhs, '=>', rhs
forest2 = forest[:]
forest2[i:i+n] = [(lhs, subsequence)]
result = parse(forest2, grammar)
if result != None:
return result
rhs = mklist(rhs)
n = len(rhs)
subsequence = forest[i:i+n]
if match(subsequence, rhs):
print(subsequence, lhs, '=>', rhs)
forest2 = forest[:]
forest2[i:i+n] = [(lhs, subsequence)]
result = parse(forest2, grammar)
if result != None:
return result
return None
def mklist(x):