Sometimes, we want to remove duplicates from a list of lists with Python.
In this article, we’ll look at how to remove duplicates from a list of lists with Python.
How to remove duplicates from a list of lists with Python?
To remove duplicates from a list of lists with Python, we can use the itertools.groupby method.
For instrance, we write
k = [[1, 2], [4], [5, 6, 2], [1, 2], [3], [4]]
import itertools
k.sort()
l = list(k for k, _ in itertools.groupby(k))
to call sort on k to sort it in place.
Then we call itertools.groupby(k) to create an iterator with tuples with the nested list k as the first item.
And then we extract that from each tuple with list comprehension and convert the returned iterator to a list with list.
Conclusion
To remove duplicates from a list of lists with Python, we can use the itertools.groupby method.
