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re.MULTILINE 使用例

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この間これと同じ正規表現を書いてなぜ動かなかったのかわからない。

remultiline.py
# -*- coding:utf-8 -*-
import re


text = """
[id][integer] PRIMARY KEY,
[column1][varchar](10) NOT NULL UNIQUE,
[column2][datetime] NULL,
[column3][decimal](10, 2) NOT NULL
"""


pattern = r'^\[([^\]]+)\]\[([^\]]+)\](\([^\)]+\))?\s.+$'
# MULTILINEフラグがないと正しく処理されない。
print "with re.M", re.findall(pattern, text, re.M)
# => [('id', 'integer', ''),
#    ('column1', 'varchar', '(10)'),
#    ('column2', 'datetime', ''),
#    ('column3', 'decimal', '(10, 2)')]

print "without re.M", re.findall(pattern, text)
# => []
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