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Python find () method

Python strings Python strings


description

Python find () method to detect whether a string contains a substring str, if you specify beg (start) and end (end) range, it is checked whether contained within the specified range, if it contains the substring returns the index value at the start, otherwise return -1.

grammar

find () method syntax:

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

parameter

  • str - the specified search string
  • beg - starting index, the default is 0.
  • end - the end of the index, the default is the length of the string.

return value

If you include substring returns the index value at the start, otherwise it returns -1.

Examples

The following example shows an example of find () method:

#!/usr/bin/python

str1 = "this is string example....wow!!!";
str2 = "exam";

print str1.find(str2);
print str1.find(str2, 10);
print str1.find(str2, 40);

Examples of the above output results are as follows:

15
15
-1

Python strings Python strings