python - 如何使用nltk正则表达式解决此问题？(How to solve this problem with nltk regular expression?)

Question

In the W3C Date Time Format, dates are represented like this: 2009-12-31 .

(在W3C日期时间格式中，日期表示为： 2009-12-31 。)

Replace the ?

(更换?)

in the following Python code with a regular expression, in order to convert the string '2009-12-31' to a list of integers [2009, 12, 31] :

(在以下带有正则表达式的Python代码中，为了将字符串'2009-12-31'转换为整数列表[2009, 12, 31] ：)

[int(n) for n in re.findall(?, '2009-12-31')]

  ask by Ann Smith translate from so

Answer 1

Try this :

(尝试这个 ：)

>>> s =  '2009-12-31'
>>> import re
>>> [int(n) for n in re.findall(r"d+", s)]
[2009, 12, 31]