Can you convert a tuple to a list in python?

#initialize tuple
aTuple = [True, 28, 'Tiger']

#tuple to list
aList = list[aTuple]

#print list
print[type[aList]]
print[aList]

[True, 28, 'Tiger']

#initialize tuple
aTuple = [67, 28, 41, 37]

#tuple to list
aList = list[aTuple]

#print list
print[type[aList]]
print[aList]

[67, 28, 41, 37]

Lists and tuples are Python’s most used data types. The tuple data type in Python is similar to a list with one difference that element values of a tuple can not be modified, and tuple items are put between parentheses instead of a square bracket.

To convert the Python list to tuple, use the tuple[] method.

To convert a tuple to list in Python, use the list[] method. The list[] is a built-in Python method that takes a tuple as an argument and returns the list. The list[] takes sequence types and converts them to lists.

Syntax

list[sequence]

Parameters

The sequence is a tuple that will be converted into the list.

Return Value

The list[] method returns the list.

Example

tup = [21, 19, 11, 46, 18]
print[tup]

lt = list[tup]
print[lt]

Output

[21, 19, 11, 46, 18]
[21, 19, 11, 46, 18]

You can see that the list[] method has converted a tuple into a list, and all the tuple elements are intact.

Convert a list of tuples into a list

To convert a list of tuples into a list, use the list comprehension. List comprehension offers a shorter syntax when you want to create a new list based on the values of an existing list.

# List of tuple initialization
listoftuples = [["Apple", 1], ["Microsoft", 2], ["Amazon", 3]]

# Using list comprehension
out = [item for t in listoftuples for item in t]

# Printing output
print[out]

Output

['Apple', 1, 'Microsoft', 2, 'Amazon', 3]

Using list comprehension, we can convert a list of tuples into one single list.

You can also use itertools.chain[] method to convert a list of tuples into a list.

# Importing itertools
import itertools

# List of tuple initialization
tuple = [[11, 21], [31, 41], [51, 61]]

# Using itertools
out = list[itertools.chain[*tuple]]

# Printing output
print[out]

Output

[11, 21, 31, 41, 51, 61]

Converting tuple to list using for loop and append[]

Create an empty list to fill in one tuple element at a time using the append[] method and pass the tuple element into the function within a for loop body iterating over all tuple elements.

# app.py

def convert_tuple_to_list[tup]:
    brand_new_list = []
    for element in tup:
        brand_new_list.append[element]
    return brand_new_list


tupl = [1, 2, 8, 11]
print[convert_tuple_to_list[tupl]]
tupl_2 = ['Vecna', 'Bob', 'Kali', 'Eleven']
print[convert_tuple_to_list[tupl_2]]
tupl_3 = [11, ]
print[convert_tuple_to_list[tupl_3]]

Output

[1, 2, 8, 11]
['Vecna', 'Bob', 'Kali', 'Eleven']
[11]

The list append[] method appends an element to the end of the list.

Using an asterisk[*] operator

Using the unpacking asterisk operator * from Python 3.5, use the expression [*t] creates a new list with the square bracket notation and unpacks all elements of the tuple t into the list.

# app.py

def convert_tuple_to_list[tup]:
  return [*tup]


tupl = [1, 2, 8, 11]
print[convert_tuple_to_list[tupl]]
tupl_2 = ['Vecna', 'Bob', 'Kali', 'Eleven']
print[convert_tuple_to_list[tupl_2]]
tupl_3 = [11, ]
print[convert_tuple_to_list[tupl_3]]

Output

[1, 2, 8, 11]
['Vecna', 'Bob', 'Kali', 'Eleven']
[11]

 The [*tup] is the most concise one-liner to convert a tuple to a list in Python.

Conclusion

Use the list[] method to convert a tuple to a list in Python. The list[] and tuple[] return a new list and tuple when given an iterable object such as a list, tuple, set, range, etc. That is it for this tutorial.

See also

Python list to set

Python list to csv

Python list to array

Python list to string

Python list to dataframe

How do I return a tuple to a list?

How do you convert a tuple to a list of tuples in Python?

Can we convert list to tuple and tuple to list in Python?

Why use a tuple instead of a list?