How to Merge Data based on the Key within the Dictionary while retaining the Keys in the output in Python?

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65868936/how-to-merge-data-based-on-the-key-within-the-dictionary-while-retaining-the-key

Answer 1

You can do it with defaultdict

from collections import defaultdict

res = defaultdict(list)
a = [{'ID': '743987', 'Information': 'Anime is the Best'},
 {'ID': '743987','Information': 'Python is the Best'}]
for i in a:
    for key in i.keys():
        if key == 'ID':
            res[key] = i[key]
        else:
            res[key].append(i[key])
print(dict(res))

Output

{'ID': '743987', 'Information': ['Anime is the Best', 'Python is the Best']}