Python: Combine values in python list of dictionaries

Python dictionary: Exercise-23 with Solution

Write a Python program to combine values in python list of dictionaries.

Sample Solution:-

Python Code:

from collections import Counter
item_list = [{'item': 'item1', 'amount': 400}, {'item': 'item2', 'amount': 300}, {'item': 'item1', 'amount': 750}]
result = Counter()
for d in item_list:
    result[d['item']] += d['amount']

Sample Output:

Counter({'item1': 1150, 'item2': 300})

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import gc
collected_objects = gc.collect()