时间:2021-07-01 10:21:17 帮助过:305人阅读
一个刚结束的笔试题目,简单贴一下吧,下面是具体实现:
- #!usr/bin/env python
- #encoding:utf-8
- '''
- __Author__:沂水寒城
- 功能:判断一个字符串是否是合法IP地址
- '''
- import re
- def judge_legal_ip(one_str):
- '''
- 正则匹配方法
- 判断一个字符串是否是合法IP地址
- '''
- compile_ip=re.compile('^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$')
- if compile_ip.match(one_str):
- return True
- else:
- return False
- def judge_legal_ip2(one_str):
- '''
- 简单的字符串判断
- '''
- if '.' not in one_str:
- return False
- elif one_str.count('.')!=3:
- return False
- else:
- flag=True
- one_list=one_str.split('.')
- for one in one_list:
- try:
- one_num=int(one)
- if one_num>=0 and one_num<=255:
- pass
- else:
- flag=False
- except:
- flag=False
- return flag
- if __name__=='__main__':
- ip_list=['','172.31.137.251','100.10.0.1000','1.1.1.1','12.23.13','aa.12.1.2','12345678','289043jdhjkbh']
- for one_str in ip_list:
- if judge_legal_ip(one_str): #正则方法
- #if judge_legal_ip2(one_str): #字符串方法
- print '{0} is a legal ip address!'.format(one_str)
- else:
- print '{0} is not a legal ip address!'.format(one_str)
结果如下:
- is not a legal ip address!
- 172.31.137.251 is a legal ip address!
- 100.10.0.1000 is not a legal ip address!
- 1.1.1.1 is a legal ip address!
- 12.23.13 is not a legal ip address!
- aa.12.1.2 is not a legal ip address!
- 12345678 is not a legal ip address!
- 289043jdhjkbh is not a legal ip address!
相关推荐:
python实现判断数组是否包含指定元素的方法
以上就是python实现判断一个字符串是否是合法IP地址的详细内容,更多请关注Gxl网其它相关文章!