Here are the 5 ways to convert a tuple to a list in Python:
- Using the list() function
- Using the list comprehension
- Using a for loop
- Using an asterisk(*) operator
- 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
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
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
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
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'>
Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.