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2 matches
Lists & loops easy

How to Group Consecutive Equal Elements in Python

Group consecutive equal elements in a list into sublists using itertools.groupby.

groupby itertools lists
Python
from itertools import groupby

def group_consecutive(lst):
    """Group consecutive equal elements into sublists."""
    return [list(group) for _, group in groupby(lst)]

if __name__ == "__main__":
    input_list = [1, 1, 2, 2, 2, 3, 1, 1, 4, 4, 4, 4]
    result = group_consecutive(input_list)
    print("Input:", inp…
16 0 Open
Comprehensions & generators easy

Group Consecutive Keys in Python with itertools.groupby

Group consecutive equal elements in a list using the itertools.groupby generator, printing each key and its values.

itertools groupby generators
Python
from itertools import groupby

data = [1, 1, 2, 2, 3, 1, 1, 4, 4, 4]

for key, group in groupby(data):
    group_list = list(group)
    print(f"Key: {key}, Values: {group_list}")
11 0 Open

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