Sometimes, we want to extract first item of each sublist with Python.
In this article, we’ll look at how to extract first item of each sublist with Python.
How to extract first item of each sublist with Python?
To extract first item of each sublist with Python, we can use list comprehension.
For instance, we write:
lst = [['a', 'b', 'c'], [1, 2, 3], ['x', 'y', 'z']]
lst2 = [item[0] for item in lst]
print(lst2)
to get the first item from each list in lst by getting item[0] from each item, which is each list in lst.
Therefore, lst2 is ['a', 1, 'x'].
Conclusion
To extract first item of each sublist with Python, we can use list comprehension.
