Python Tuple - index() Method
The Python index() method returns the index number of first occurrence of the specified element in the tuple. It returns the zero-based index.
The method raises a ValueError, if the specified element is not found.
Syntax
tuple.index(elem, start, end)
Parameters
elem |
Required. Specify the value of the element which need to be searched in the tuple. |
start |
Optional. Specify the starting point of the search in the tuple. |
end |
Optional. Specify the end point of the search in the tuple. |
Return Value
Returns the index number of first occurrence of an specified element in the tuple.
Example:
In the example below, index() method is used to find out index number of first occurrence of an element called 'MAR' in the tuple called MyTuple
MyTuple = ('JAN', 'FEB', 'MAR', 'APR', 'MAR')
x = MyTuple.index('MAR')
print(x)
The output of the above code will be:
2
Example:
In this example, index() method is used with optional arguments to find out the index number of first occurrence of 10 in the specified tuple.
MyTuple = [10, 20, 30, 40, 50, 10, 70, 80]
#first occurrence of 10 in the whole tuple
x = MyTuple.index(10)
print("The index of 10 is:", x)
#first occurrence of 10 in the specified
#section of the tuple
y = MyTuple.index(10, 1, 8)
print("The index of 10 in index range [1,8) is:", y)
The output of the above code will be:
The index of 10 is: 0 The index of 10 in index range [1,8) is: 5
❮ Python Tuple Methods
