Index():-
The index() method finds the first occurrence of the specified value. The index() method raises an exception if the value is not found.
The index() method is almost the same as the find() method, the only difference is that the find() method returns -1 if the value is not found.
Syntax:- string.index(value, start, end)
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value |
Required. The value to search for |
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start |
Optional. Where to start the search. Default is 0 |
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end |
Optional. Where to end the search. Default is to the end of the string |
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txt = “Hello, welcome to my world.” x = txt.index(“welcome”) print(x) output:- 7 |
txt = “Hello, welcome to my world.” x = txt.index(“e”) print(x) output:- 1 |
txt = “Hello, welcome to my world.” x = txt.index(“e”, 5, 10) print(x) output:- 8 |
Note:- 1. Where in the text is the first occurrence of the letter “e”?:
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Where in the text is the first occurrence of the letter “e” when you only search between position 5 and 10?:
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If the value is not found, the find() method returns -1, but the index() method will raise an exception:
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txt = “Hello, welcome to my world.” print(txt.find(“q”)) print(txt.index(“q”)) output:- -1 |