Python3 rindex () method
description
rindex () returns the position of substring in string str the last occurrence, if no matching string reported abnormal, you can specify the optional parameter [beg: end] with discovery interval.
grammar
rindex () method syntax:
str.rindex(str, beg=0 end=len(string))
parameter
- str - the search string
- beg - Find the location, the default is 0
- end - the end find a location, the default is the length of the string.
return value
Returns the position of substring in string str the last occurrence, if no matching string reported abnormal.
Examples
The following example shows rindex () function to use:
#!/usr/bin/python3 str1 = "this is really a string example....wow!!!" str2 = "is" print (str1.rindex(str2)) print (str1.rindex(str2,10))
Examples of the above output results are as follows:
5
Traceback (most recent call last):
File "test.py", line 6, in <module>
print (str1.rindex(str2,10))
ValueError: substring not found