# Convert a Tuple of Tuples to a List of Lists in Python

Last updated: Jul 3, 2022

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## Convert a Tuple of Tuples to a List of Lists in Python#

To convert a tuple of tuples to a list of lists:

1. Use a list comprehension to iterate over the tuple.
2. Use the `list()` class to convert each nested tuple to a list.
3. The result will be a two-dimensional list.
main.py
```Copied!```tuple_of_tuples = (('one', 'two'), ('three', 'four'))

list_of_lists = [list(tup) for tup in tuple_of_tuples]

# 👇️ [['one', 'two'], ['three', 'four']]
print(list_of_lists)
``````

We used a list comprehension to iterate over the tuple.

List comprehensions are used to perform some operation for every element, or select a subset of elements that meet a condition.

On each iteration, we pass the current nested tuple to the `list()` class to convert it to a list.

The list class takes an iterable and returns a list object.

The result is a two-dimensional list.

Alternatively, you can use the `map()` function.

To convert a tuple of tuples to a list of lists:

1. Pass the `list()` class and the tuple of tuples to the `map()` function.
2. The `map()` function will pass each nested tuple to the `list()` class.
3. Pass the `map` object to the `list` class to convert it to a list.
main.py
```Copied!```tuple_of_tuples = (('one', 'two'), ('three', 'four'))

list_of_lists = list(map(list, tuple_of_tuples))

# 👇️ [['one', 'two'], ['three', 'four']]
print(list_of_lists)
``````

The map() function takes a function and an iterable as arguments and calls the function with each item of the iterable.

This approach is a bit more implicit than using a list comprehension.

Notice that we passed the `map` object to the `list()` class to convert it to a list.

Which approach you pick is a matter of personal preference. I'd go with using a list comprehension as I find it more direct and easier to read.

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