1

使用python 模板，我可以生成输出。喜欢

>>> from string import Template
>>> s = Template('$who likes $what')
>>> s.substitute(who='tim', what='kung pao')
'tim likes kung pao'

如果我有字符串

'tim likes kung pao'

我怎样才能得到字符串tim和kung pao单独的变量？

4

3 回答 3

2

您必须解析字符串。一种方法是使用正则表达式：

import re
m = re.match(r'(.*?) likes (.*?)', 'tim likes kung pao')
if m:
    who, what = m.groups()

请注意，这可能会产生歧义；例如，如果你传递字符串“tim likes mary who like james”会发生什么？

于 2013-09-06T14:13:22.560 回答
1

一种方法是使用正则表达式：

In [8]: import re

In [9]: who, what = re.match(r'(.*) likes (.*)', 'tim likes kung pao').groups()

In [10]: who
Out[10]: 'tim'

In [11]: what
Out[11]: 'kung pao'
于 2013-09-06T14:13:16.823 回答
1 
who, what = 'tim likes kung pao'.split(' likes ', 1)
于 2013-09-06T14:13:44.057 回答