[FIXED] How can I remove an dictionary element in list?

Issue

There are some dictionary in list:

a = [{1: 2}, {1: 3}, {2: 5}, {2: 3}]

All of the keys and values of this dictionary are int type, some dicts have the same key, I want to remain those dictionaries who has the same key and the value is bigger than others, how can I do it? example: I want to obtain this list:

[{1: 3}, {2: 5}]

Solution

Assuming that each dictionary has only one key/value pair, here is a possible solution. Essentially, create a new dictionary to keep track of the maximum values for each key. Then, turn this into the final list.

def remove_duplicates(dicts):
    merged = {}
    for d in dicts:
        key, value = list(d.items())[0]
        if key not in merged:
            merged[key] = value
        else:
            merged[key] = max(
                merged[key], value
            )
    return [
        {key: value}
        for key, value in merged.items()
    ]

Answered By - BrownieInMotion