How to Convert Tuple to List in Python [5 Ways]

Here are the 5 ways to convert a tuple to a list in Python:

  1. Using the list() function
  2. Using the list comprehension
  3. Using a for loop
  4. Using an asterisk(*) operator
  5. Using the map() Function

Method 1: Using the list() function

The list() function is a built-in function that takes an iterable, such as a tuple, as an argument and returns a list.

Visual Representation

Visual Representation of Convert Tuple to List in Python

Example

# Define a tuple with integers
number_tuple = (5, 10, 15, 20, 25)

# Print the original tuple
print("Original Tuple:", number_tuple)

# Convert the tuple into a list
number_list = list(number_tuple)

# Print the converted list
print("Converted List:", number_list)
print(type(number_list))

Output

Original Tuple: (5, 10, 15, 20, 25)
Converted List: [5, 10, 15, 20, 25]
<class 'list'>

Method 2: Using list comprehension

List comprehension allows you to apply an expression or operation to each element of an iterable and collect the results in a new list.

Visual Representation

Visual Representation of Using list comprehension

Example

# Define a tuple
number_tuple = (5, 10, 15, 20, 25)

# Print the original tuple
print("Original Tuple:", number_tuple)

# Using list comprehension to convert the tuple to a list
number_list = [item for item in number_tuple]

# Print the new list
print("Converted List:", number_list)
print(type(number_list))

Output

Original Tuple: (5, 10, 15, 20, 25)
Converted List: [5, 10, 15, 20, 25]
<class 'list'>

Method 3: Using a for loop

Create an empty list and use the append() method within a for loop to add each element of the tuple, one at a time.

Example

# Define a tuple
number_tuple = (5, 10, 15, 20, 25)

# Initialize an empty list
number_list = []

# Iterate over each element in the tuple
for item in number_tuple:
 # Append each element to the list
 number_list.append(item)

# Print the new list
print(number_list)
print(type(number_list))

Output

[5, 10, 15, 20, 25]
<class 'list'>

Method 4: Using the map() Function

The map() function applies a specified function to each item of an iterable and converts the result into a list.

Visual Representation

Visual Representation of Using the map() Function

Example

number_tuple = (5, 10, 15, 20, 25)

number_list = list(map(lambda x: x, number_tuple))

print(number_list)
print(type(number_list))

Output

[5, 10, 15, 20, 25]
<class 'list'>

Method 5: Using an asterisk(*) operator

The unpacking operator * allows you to unpack the elements of a tuple into a new list.

Visual Representation

Visual Representation of Using an asterisk operator

Example

number_tuple = (5, 10, 15, 20, 25)

number_list = [*number_tuple]

print(number_list)
print(type(number_list))

Output

[5, 10, 15, 20, 25]
<class 'list'>

Bonus : Flattening Nested Tuples into a Single List Using itertools.chain()

Example

import itertools

number_tuple = ((5, 10), (15, 20, 25))

number_list = list(itertools.chain(*number_tuple))

print(number_list)
print(type(number_list))

Output

[5, 10, 15, 20, 25]
<class 'list'>

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