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sync plural5 with example code (again!)

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Mark Pilgrim
2009-08-04 16:30:56 -07:00
parent dd0a07d2fc
commit 90b5a58131
1 changed files with 2 additions and 2 deletions
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generators.html
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@@ -295,14 +295,14 @@ rules = []
<p>Wouldn&#8217;t it be grand to have a generic <code>plural()</code> function that parses the rules file? Get rules, check for a match, apply appropriate transformation, go to next rule. That&#8217;s all the <code>plural()</code> function has to do, and that&#8217;s all the <code>plural()</code> function should do.
<p class=d>[<a href=examples/plural5.py>download <code>plural5.py</code></a>]
<pre class=nd><code class=pp>def rules():
<pre class=nd><code class=pp>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))</code></pre>