python的字符串有众多方法，可以在doc文档中查看

示例

转换开头字母为大写

c1="welcome to my python">>> c1.capitalize()'Welcome to my python'

>>> print(c1)welcome to my python>>> c2=c1.capitalize()>>> print(c2)Welcome to my python

统计出现次数

>>> c1.count('o')3

find查询

>>> hw='hello world'>>> hw'hello world'>>> hw.find('world')6>>> hw[6:]'world'

split分割

>>> ip1="192.168.1.123">>> ip2="192.189.2.33">>> ip1.split('.')['192', '168', '1', '123']

分割

ip1.split('.')[-1]'123'

连接

>>> ip1=ip1.split('.')>>> ip1['192', '168', '1', '123']>>> ".".join(ip1)'192.168.1.123'>>> "-------".join(ip1)