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Python String index() Method
Description
Python string method index() determines if string str occurs in string or in a substring of string if starting index beg and ending index end are given. This method is same as find(), but raises an exception if sub is not found.
Syntax
str.index(str, beg = 0 end = len(string))
Parameters
str − This specifies the string to be searched.
beg − This is the starting index, by default its 0.
end − This is the ending index, by default its equal to the length of the string.
Return Value
Index if found otherwise raises an exception if str is not found.
Example
#!/usr/bin/python str1 = "this is string example....wow!!!"; str2 = "exam"; print str1.index(str2) print str1.index(str2, 10) print str1.index(str2, 40)
Result
15 15 Traceback (most recent call last): File "test.py", line 8, in print str1.index(str2, 40); ValueError: substring not found shell returned 1
python_strings.htm
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