Python - Flatten the list of dictionaries

Question

List of dictionaries:

data = [{
         \'a\':{\'l\':\'Apple\',
                \'b\':\'Milk\',
                \'d\':\'Meatball\'},
         \'b\':{\'favou         


        

Answer 1

You can do this with 2 nested loops, and dict.update() to add inner dictionaries to a temporary dictionary and add it at the end:

L = []
for d in data:
    temp = {}
    for key in d:
        temp.update(d[key])

    L.append(temp)

# timeit ~1.4
print(L)

Which Outputs:

[{'l': 'Apple', 'b': 'Milk', 'd': 'Meatball', 'favourite': 'coke', 'dislike': 'juice'}, {'l': 'Apple1', 'b': 'Milk1', 'd': 'Meatball2', 'favourite': 'coke2', 'dislike': 'juice3'}]