The RFind () method in Python uses the detailed

Source: Internet
Author: User

This article mainly introduces the RFind () method in Python using the detailed, is the basic knowledge of Python, need friends can refer to the

The RFind () method returns the last index found by the child str, or-1, optionally restricting the search string string[beg:end] If there is no such index.


The following is the syntax for the RFind () method:


1 Str.rfind (str, beg=0 End=len (String))


STR--This option specifies the string to search for

Beg--This is the start index, by default 0

End--This is the ending index, which is equal to the length of the string by default

return value

This method returns 1 if it finds the last index returned.


The following example shows the use of the RFind () method


1 2 3 4 5 6 7 8 9 10 11-12 #!/usr/bin/python str = "This is really a string!!!";   str = "is"; Print Str.rfind (str); Print Str.rfind (str, 0, 10);   Print Str.rfind (str, 10, 0); Print Str.find (str); Print Str.find (str, 0, 10); Print Str.find (str, 10, 0);

When we run the above program, it produces the following results:


1 2 3 4 5 6 5 5-1 2 2-1
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