This tutorial will discuss about unique ways to convert a list of tuples to a list of lists in Python.
Table Of Contents
Method 1: Using List Comprehension
Iterate over all the tuples in list using List Comprehension. During iteration, apply list() method on each tuple to convert it into a list, then add that new list to a new main list constructed by List comprehension. In this end, List Comprehension will return a list of lists, constructed from list of tuples.
Let’s see the complete example,
# List of Tuples
listOfTuples = [('Mark', 34),
('John', 23),
('Ritu', 37),
('Avni', 29)]
# Convert a list of tuples to a list of lists using List Comprehension
listOfLists = [ list(tupleObj) for tupleObj in listOfTuples ]
print(listOfLists)
Output
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[['Mark', 34], ['John', 23], ['Ritu', 37], ['Avni', 29]]
Method 2: Using map() function
Apply list() function on each tuple in list, using the map() function. It will return a mapped object containing all the lists converted from tuples. Then join all those sublists into a new List. This way list of tuples will be converted into a list of lists.
Let’s see the complete example,
# List of Tuples
listOfTuples = [('Mark', 34),
('John', 23),
('Ritu', 37),
('Avni', 29)]
# Convert a list of tuples to a list of lists using map() function
listOfLists = list(map(list, listOfTuples))
print(listOfLists)
Output
[['Mark', 34], ['John', 23], ['Ritu', 37], ['Avni', 29]]
Method 3: Using enumerate() function
Create an empty list. Iterate over all tuples in list using a for-loop and enumerate() method. Then convert each tuple into a list, and add to the new empty list, created in first step. This way list of tuples will be converted into a list of lists.
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Let’s see the complete example,
# List of Tuples
listOfTuples = [('Mark', 34),
('John', 23),
('Ritu', 37),
('Avni', 29)]
listOfLists = []
# Convert a list of tuples to a list of lists using enumerate() function
for index, tupObj in enumerate(listOfTuples):
listOfLists.append(list(tupObj))
print(listOfLists)
Output
[['Mark', 34], ['John', 23], ['Ritu', 37], ['Avni', 29]]
Summary
We learned about different ways to convert a list of tuples into a list of lists in Python.
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