تجميع العناصر المتجاورة بإستخدام groupby

from itertools import groupby

for key, group in groupby("AAABBA"):
    print(key, list(group))

A ['A', 'A', 'A']
B ['B', 'B']
A ['A']

from itertools import groupby

words = ["ant", "bear", "apple", "bird"]
ordered = sorted(words, key=lambda word: word[0])
for key, group in groupby(ordered, key=lambda word: word[0]):
    print(key, list(group))

a ['ant', 'apple']
b ['bear', 'bird']