Python Tuple index() Method

Python Tuple index() Method

The tuple.index() method of Python finds the first occurrence of the specified value and returns its index if the value is found else raises an exception if the value is not found.

Syntax

tuple.index(value)

Parameter

value- This parameter represents the element to search in the tuple

Return

This method returns the position/index for the specified element in the tuple or returns a ValueError exception if the value is not found.

Example 1

 # Python program explaining
 # the tuple.index() method
 # initializing the tuple values
 tupleVal = (1, 2, 3,4,5, 7, 8, 7, 5, 5, 6, 4, 4)
 print("Tuple:",tupleVal)
 # finds the first occurrence of the specified value and returns its index
 Index = tupleVal.index(4)
 # printing the returned value
 print("The index value of  '4' is",Index) 

Output

Tuple: (1, 2, 3, 4, 5, 7, 8, 7, 5, 5, 6, 4, 4)
The index value of  '4' is 3

Example 2

 # Python program explaining
 # the tuple.index() method
 # initializing the alphabetic tuple values
 vowels = ('a','f','l', 'm', 'u')
 #passing an element that is not present in the tuple
 # element 'p' is searched
 index = vowels.index('r')
 # will return an ValueError exception
 print('The index of r:', index) 

Output

 Traceback (most recent call last):
   File "main.py", line 9, in <module>
     index = vowels.index('r')
 ValueError: tuple.index(x): x not in tuple