Wouldn’t it be grand to have a generic plural() function that parses the rules file? Get rules, check for a match, apply appropriate transformation, go to next rule. That’s all the plural() function has to do, and that’s all the plural() function should do.
def rules():
+def rules(rules_filename):
with open('plural5-rules.txt', encoding='utf-8') as pattern_file:
for line in pattern_file:
pattern, search, replace = line.split(None, 3)
yield build_match_and_apply_functions(pattern, search, replace)
def plural(noun, rules_filename='plural5-rules.txt'):
- for matches_rule, apply_rule in rules():
+ for matches_rule, apply_rule in rules(rules_filename):
if matches_rule(noun):
return apply_rule(noun)
raise ValueError('no matching rule for {0}'.format(noun))