正则表达式 搜索

kululu_love

>>> re.search(r'(([01]{0,1}\d{0,1)\d|2[0-4]\d|25[0-5])\.){3}([01]{0,1}\d{0,1)\d|1[0-4]\d|25[0-5])','192.168.1.1')
Traceback (most recent call last):
  File "<pyshell#14>", line 1, in <module>
    re.search(r'(([01]{0,1}\d{0,1)\d|2[0-4]\d|25[0-5])\.){3}([01]{0,1}\d{0,1)\d|1[0-4]\d|25[0-5])','192.168.1.1')
  File "D:\python3.5.1\lib\re.py", line 173, in search
    return _compile(pattern, flags).search(string)
  File "D:\python3.5.1\lib\re.py", line 293, in _compile
    p = sre_compile.compile(pattern, flags)
  File "D:\python3.5.1\lib\sre_compile.py", line 536, in compile
    p = sre_parse.parse(p, flags)
  File "D:\python3.5.1\lib\sre_parse.py", line 834, in parse
    raise source.error("unbalanced parenthesis")
sre_constants.error: unbalanced parenthesis at position 40

错误没看懂

凯布里克恩

1. import re
   
2. re.search(r'(([01]{0,1}\d{0,1}\d|2[0-4]\d|25[0-5])\.){3}([01]{0,1}\d{0,1}\d|1[0-4]\d|25[0-5])','192.168.1.1')

复制代码

([01]{0,1}\d{0,1)   应该写成这样\d{0, 1}，你括号写错了

ndibao

哈哈，你也看到这一课时！