Python : regular expression

re module的一些紀錄, 持續update

### Common use of the regular expression

\w   [a-zA-Z0-9_]

\d    [0-9]

\s    space

\\     '\'

.       ''

+     1 or more than 1

.\     everything

### Code

>>> import re

>>> string = 'Age=20'

>>> re.search('\d+', string).group()

20

>>> import re
>>> string = 'Beautiful, is; better*than\nugly'

>>> # 分隔符號：,  ;  *  \n
>>> list= re.split(',|; |\*|\n', string)
>>> list
['Beautiful', 'is', 'better', 'than', 'ugly']