Python | Remove Consecutive tuple according to key
Sometimes, while working with Python list, we can have a problem in which we can have a list of tuples and we wish to remove them basis of first element of tuple to avoid it’s consecutive duplication. Let’s discuss certain way in which this problem can be solved.
Method : Using groupby() + itemgetter() + next()
This task can be performed using combination of these functions. In this, we convert the list to iterator for faster access using next(), itemgetter() is used to get the index of tuple on which we need to perform the deletion(in this case first) and groupby() performs the final grouping of elements.
# Python3 code to demonstrate working of # Remove Consecutive tuple according to key # using itemgetter() + next() + groupby() from operator import itemgetter from itertools import groupby # initialize list test_list = [(4, 5), (4, 6), (7, 8), (7, 1), (7, 0), (8, 1)] # printing original list print("The original list is : " + str(test_list)) # Remove Consecutive tuple according to key # using itemgetter() + next() + groupby() res = [next(group) for key, group in groupby(test_list, key = itemgetter(0))] # printing result print("List after Consecutive tuple removal : " + str(res)) |
chevron_right
filter_none
Output :
The original list is : [(4, 5), (4, 6), (7, 8), (7, 1), (7, 0), (8, 1)] List after Consecutive tuple removal : [(4, 5), (7, 8), (8, 1)]
Recommended Posts:
- Python | Remove particular element from tuple list
- Python | Remove tuple from list of tuples if not containing any character
- Python | Remove consecutive duplicates from list
- Python groupby method to remove all consecutive duplicates
- Python | Sort tuple list by Nth element of tuple
- Python | Replace tuple according to Nth tuple element
- Unpacking a Tuple in Python
- Python | tuple() Function
- Python | Reversing a Tuple
- Python | Mean of tuple list
- Python | Convert a list into a tuple
- Python | Removing strings from tuple
- Python | Add tuple to front of list
- Python | Unpacking tuple of lists
- Python | Find whether all tuple have same length
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.
