Python，正则表达式过滤元素以列表中的样式结尾

Question

使用正则表达式，我想找出列表中的哪些元素以样式 (yyyy-mm-dd) 结尾，例如 (2016-05-04) 等。模式 r'(2016-\d\d-\d\d)' 看起来不错，即使是天真。将它与 Endswith 结合的正确方法是什么？谢谢你。import rea_list = ["Peter arrived on (2016-05-04)", "Building 4 floor (2020)", "Fox movie (2016-04-04)", "David 2016-08-", "Mary comes late(true)"]style = r'\(2016\-\d\d\-\d\d\)'for a in a_list:    if a.endswith(style):        print a

Answer 1

您不能将正则表达式与字符串操作结合使用。只需用于re.search查找匹配并使用$模式中的锚点来检查匹配是否发生在最后

>>> import re

>>> style = re.compile(r'\(2016-\d\d-\d\d\)$')

>>> for a in a_list:

...     if style.search(a):

...         print (a)

... 

Peter arrived on (2016-05-04)

Fox movie (2016-04-04)

Answer 2

这将是

.*\(2016\-\d{2}\-\d{2}\)$

$ 符号表示它在最后

Answer 3

用 r'\(\d{4}-\d{2}-\d{2}\)$'

前任：

import re

a_list = ["Peter arrived on (2016-05-04)", "Building 4 floor (2020)", "Fox movie (2016-04-04)", "David 2016-08-", "Mary comes late(true)"]

style = r'\(\d{4}-\d{2}-\d{2}\)$'

for a in a_list:

    if re.search(style, a):

        print a

输出：

Peter arrived on (2016-05-04)

Fox movie (2016-04-04)