python 学习札记-str.find() str.rfind()

python 学习笔记--str.find() str.rfind()

str.find() ? & str.rfind()

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str.find(str, start=0 end=len(string))

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Parameters:

Here is the detail of parameters:

• str: specifies the string to be searched.

• start?: starting index, by default its 0

• end?: ending index, by default its equal to the lenght of the string

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  find()----找到的第一个符合字符的index

  rfind()-----找到最后一个符合的字符的index

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  #/usr/bin/pythonabsfile=r"/root/log/"index=absfile.find("/")index=absfile.rfind("/")print absfileprint index

  output：

  9

  0

  ?

  ?