python基础（一）——字符串

1.分割字符串split

>>> filename = "iamge.png"
>>> segments = filename.split(".")
>>> segments[0]
'iamge'
>>> segments[1]
'png'

2.查找特定字符串

>>> dir=r"C:Usersusernamehahaapphaha"
#反向查找
>>> dir.rfind("haha")
27
#正向查找
>>> dir.find("haha")
18

3.拼接字符串

>>> "hello"+" python"
'hello python'