python merge list of dict into single dict

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1>>> keys = ['a', 'b', 'c']
2>>> values = [1, 2, 3]
3>>> dictionary = dict(zip(keys, values))
4>>> print(dictionary)
5{'a': 1, 'b': 2, 'c': 3}

1dict1 = {'color': 'blue', 'shape': 'square'}
2dict2 = {'color': 'red', 'edges': 4}
3
4dict1.update(dict2) #if a key exists in both, it takes the value of the second dict
5# dict1 = {'color': 'red', 'shape': 'square', 'edges': 4}
6# dict2 is left unchanged

1#initialize lists
2
3key_list = ['red', 'green', 'blue']
4value_list = [1, 2, 3]
5
6#convert lists
7
8my_dict = {} 
9for key in key_list: 
10    for value in value_list: 
11        my_dict[key] = value 
12        value_list.remove(value) 
13        break  
14print(my_dict)
15

1from collections import defaultdict
2dict_list = {
3	1: [{
4			"x": "test_1",
5			"y": 1
6		},
7		{
8			"x": "test_2",
9			"y": 1
10		}, {
11			"x": "test_1",
12			"y": 2
13		}
14	],
15}
16print(dict_list) # {1: [{'x': 'test_1', 'y': 1}, {'x': 'test_2', 'y': 1}, {'x': 'test_1', 'y': 2}]}
17
18data = dict()
19for key, value in dict_list.items():
20    tmp = defaultdict(int)
21    for index, item in enumerate(value):
22        tmp[item.get("x") ] += item.get("y")
23
24    for tmp_key, tmp_value in tmp.items():
25        data.setdefault(key, []).append(
26            {
27                "x": tmp_key,
28                "y": tmp_value
29            }
30        )
31print(data) # {1: [{'x': 'test_1', 'y': 3}, {'x': 'test_2', 'y': 1}]}
32
33# test 1 values is added together

1l = [{'a': 0}, {'b': 1}, {'c': 2}, {'d': 3}, {'e': 4, 'a': 4}]
2d = {k: v for x in l for k, v in x.items()}
3print(d)
4# {'a': 4, 'b': 1, 'c': 2, 'd': 3, 'e': 4}

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