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Python Tuples


Tuple

A tuple is a collection which is ordered and unchangeable. In Python tuples are written with round brackets.

Example

Create a Tuple:

thistuple = ("apple", "banana", "cherry")
print(thistuple)
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Access Tuple Items

You can access tuple items by referring to the index number, inside square brackets:

Example

Return the item in position 1:

thistuple = ("apple", "banana", "cherry")
print(thistuple[1])
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Change Tuple Values

Once a tuple is created, you cannot change its values. Tuples are unchangeable.

Example

You cannot change values in a tuple:

thistuple = ("apple", "banana", "cherry")
thistuple[1] = "blackcurrant"
# The values will remain the same:
print(thistuple)
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Loop Through a Tuple

You can loop through the tuple items by using a for loop.

Example

Iterate through the items and print the values:

thistuple = ("apple", "banana", "cherry")
for x in thistuple:
  print(x)
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You will learn more about for loops in out Python For Loops Chapter.


Check if Item Exists

To determine if a specified item is present in a tuple use the in keyword:

Example

Check if "apple" is present in the tuple:

thistuple = ("apple", "banana", "cherry")
if "apple" in thistuple:
  print("Yes, 'apple' is in the fruits tuple")
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Tuple Length

To determine how many items a list have, use the len() method:

Example

Print the number of items in the tuple:

thistuple = ("apple", "banana", "cherry")
print(len(thistuple))
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Add Items

Once a tuple is created, you cannot add items to it. Tuples are unchangeable.

Example

You cannot add items to a tuple:

thistuple = ("apple", "banana", "cherry")
thistuple[3] = "orange" # This will raise an error
print(thistuple)
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Remove Items

Note: You cannot remove items in a tuple.

 Tuples are unchangeable, so you cannot remove items from it, but you can delete the tuple completely:

Example

The del keyword can delete the tuple completely:

thistuple = ("apple", "banana", "cherry")
del thistuple
print(thistuple) #this will raise an error because the tuple no longer exists
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The tuple() Constructor

It is also possible to use the tuple() constructor to make a tuple.

Example

Using the tuple() method to make a tuple:

thistuple = tuple(("apple", "banana", "cherry")) # note the double round-brackets
print(thistuple)
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Tuple Methods

Python has two built-in methods that you can use on tuples.

Method Description
count()Returns the number of times a specified value occurs in a tuple
index()Searches the tuple for a specified value and returns the position of where it was found

Test Yourself With Exercises

Exercise:

Print the first item in the fruits tuple.

fruits = ("apple", 
"banana",
"cherry") print()

Start the Exercise