Python - Access Tuple Items

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Access Tuple Items

In Python, Tuple is a sequence. Each object in the tuple is accessible with its index. The index starts from "0". Index or the last item in the tuple is "length-1". To access values in tuples, use the square brackets for slicing along with the index or indices to obtain value available at that index.

The slice operator fetches one or more items from the tuple.

obj = tup1[i]

Example

Put the index inside square brackets to retrieve the item at its position.

tup1 = ("Rohan", "Physics", 21, 69.75)
tup2 = (1, 2, 3, 4, 5)

print ("Item at 0th index in tup1tup2: ", tup1[0])
print ("Item at index 2 in list2: ", tup2[2])

It will produce the following output −

Item at 0th index in tup1: Rohan
Item at index 2 in tup2: 3

Access Tuple Items with Negative Indexing

Python allows negative index to be used with any sequence type. The "-1" index refers to the last item in the tuple.

Example

tup1 = ("a", "b", "c", "d")
tup2 = (25.50, True, -55, 1+2j)
print ("Item at 0th index in tup1: ", tup1[-1])
print ("Item at index 2 in tup2: ", tup2[-3])

It will produce the following output −

Item at 0th index in tup1: d
Item at index 2 in tup2: True

Extracting a Subtuple from a Tuple

The slice operator extracts a subtuple from the original tuple.

Subtup = tup1[i:j]

Parameters

• i − index of the first item in the subtup

• j − index of the item next to the last in the subtup

This will return a slice from i^th to (j-1)^th items from the _tup1.

Example

Take a look at the following example −

tup1 = ("a", "b", "c", "d")
tup2 = (25.50, True, -55, 1+2j)

print ("Items from index 1 to 2 in tup1: ", tup1[1:3])
print ("Items from index 0 to 1 in tup2: ", tup2[0:2])

It will produce the following output −

Items from index 1 to 2 in tup1: ('b', 'c')
Items from index 0 to 1 in tup2: (25.5, True)

Access Range of Tuple Items with Negative Indexing

While slicing, both operands "i" and "j" are optional. If not used, "i" is 0 and "j" is the last item in the tuple. Negative index can be used in slicing. See the following example −

Example

tup1 = ("a", "b", "c", "d")
tup2 = (25.50, True, -55, 1+2j)
tup4 = ("Rohan", "Physics", 21, 69.75)
tup3 = (1, 2, 3, 4, 5)

print ("Items from index 1 to last in tup1: ", tup1[1:])
print ("Items from index 0 to 1 in tup2: ", tup2[:2])
print ("Items from index 2 to last in tup3", tup3[2:-1])
print ("Items from index 0 to index last in tup4", tup4[:])

It will produce the following output −

Items from index 1 to last in tup1: ('b', 'c', 'd')
Items from index 0 to 1 in tup2: (25.5, True)
Items from index 2 to last in tup3: (3, 4)
Items from index 0 to index last in tup4: ('Rohan', 'Physics', 21, 69.75)