How can I append a tuple into another tuple in Python?

In this article, we will demonstrate how to append one tuple to another in Python. Below are various methods to achieve this task -

• Using + operator.

• Using sum() function.

• Using list() & extend() functions.

• Using the unpacking(*) operator.

Tuples are an immutable, unordered data type used for storing collections in Python. While lists and tuples share many similarities, lists have a variable length and are mutable, whereas tuple have fixed length and remain immutable

Using + Operator

Defining a variable to store the first input tuple, is followed by another variable to hold the second input tuple. Then, use the + operator to append or concatenate the second tuple to the first. Finally, print the resulting tuple after the concatenation.

Example

The following program appends inputTuple_2 to inputTuple1 using the + operator. The operator concatenates them, creating resultTuple with the merged elements. The function then outputs the resulting tuple, displaying the combined sequence of numbers.

# input tuple 1
inputTuple_1 = (12, 8, 6)
# input tuple 2
inputTuple_2 = (3, 4)
# appending/concatenating 2nd tuple to the first tuple using the + operator
resultTuple = inputTuple_1 + inputTuple_2
# printing the resultant tuple after appending
print("Resultant tuple after appending inputTuple_2 to the inputTuple_1:\n", resultTuple)

On executing, the above program will generate the following output ?

Resultant tuple after appending inputTuple_2 to the inputTuple_1:
(12, 8, 6, 3, 4)

Using sum() Function

We are defining a variable to store the first input tuple, followed by another variable to hold the second input tuple. Print both tuples to display their initial values. Then, use the sum() function, passing both tuples along with an empty tuple as arguments to concatenate them. Finally, print the resulting tuple after merging inputTuple_2 with inputTuple_1.

Example

This Python code defines two tuples: inputTuple_1 and inpuTuplr_2. It prints their values and then concatenates them using the sum() function, passing an empty tuple as the initial value. the result, resultYuple, contains merged elements ans is printed as output.

# input tuple 1
inputTuple_1 = (12, 8, 6)
# input tuple 2
inputTuple_2 = (3, 4)
# printing both the given input tuples
print("inputTuple_1: ", inputTuple_1)
print("inputTuple_2: ", inputTuple_2)
# appending/concatenating 2nd tuple to the first tuple
resultTuple = sum((inputTuple_1, inputTuple_2), ())
# printing the resultant tuple after appending
print("Resultant tuple after appending inputTuple_2 to the inputTuple_1:\n", resultTuple)

On executing, the above program will generate the following output ?

inputTuple_1: (12, 8, 6)
inputTuple_2: (3, 4)
Resultant tuple after appending inputTuple_2 to the inputTuple_1:
(12, 8, 6, 3, 4)

Using list() & extend() Functions

This defines the variables to store the input tuples and prints them. Converts both tuples into lists using list(), then use extend() to merge the second list into the first. Finally, convert the merged list back into a tuple using tuple() and print the result.

Example

This Python code defines two tuples, inputTuple_1 and inputTuple2. It prints them, converts both into lists, and merges them using extend(). The combined list is then converted back into a tuple. Finally, the merged resultTuple is printed as output.

# input tuple 1
inputTuple_1 = (12, 8, 6)
# input tuple 2
inputTuple_2 = (3, 4)
# printing both the given input tuples
print("inputTuple_1: ", inputTuple_1)
print("inputTuple_2: ", inputTuple_2)
# converting inputTuple_1 into list
list_1 = list(inputTuple_1)
# converting inputTuple_2 into list
list_2 = list(inputTuple_2)
# appending/concatenating 2nd list to the first list
list_1.extend(list_2)
# converting the resultant first list to a tuple
# which is the resultant tuple after appending the 2nd list to the 1st list
resultTuple=tuple(list_1)
# printing the resultant tuple after appending
print("Resultant tuple after appending inputTuple_2 to the inputTuple_1:\n", resultTuple)

The result is obtained as follows -

inputTuple_1: (12, 8, 6)
inputTuple_2: (3, 4)
Resultanat tuple after appending inputTuple_2 to the inputTuple_1:
(12, 8, 6, 3, 4)

Using the unpacking (*) operator

The unpacking * operator in Python tuples extracts individual elements from a tuple. It can be used to pass elements as arguments, combine tuples, or collect remaining items in assignments. It determines the flexibility, especially when working with variable-length tuples or simplifying tuple manipulations in functions or loops.

Example

We are defining two tuples that prints and it impacts while appending inputTuple_2 as a nested tuple, storing the result in resultTuple. FInally, the modified tuple structure is printed as output.

# input tuple 1
inputTuple_1 = (12, 8, 6)
# input tuple 2
inputTuple_2 = (3, 4)
# printing both the given input tuples
print("inputTuple_1: ", inputTuple_1)
print("inputTuple_2: ", inputTuple_2)
# Unpacking the first tuple and adding the second tuple
resultTuple= (*inputTuple_1,inputTuple_2)
# Printing the result tuple
# printing the resultant tuple after appending
print("Resultant tuple after appending inputTuple_2 to the inputTuple_1:\n", resultTuple)

We will get the output as follows -

inputTuple_1: (12, 8, 6)
inputTuple_2: (3, 4)
Resultant tuple after appending inputTuple_2 to the inputTuple_1:
(12, 8, 6, (3, 4))