create dictionary python from two lists
>>> keys = ['a', 'b', 'c'] >>> values = [1, 2, 3] >>> dictionary = dict(zip(keys, values)) >>> print(dictionary) {'a': 1, 'b': 2, 'c': 3}
create dictionary python from two lists
>>> keys = ['a', 'b', 'c'] >>> values = [1, 2, 3] >>> dictionary = dict(zip(keys, values)) >>> print(dictionary) {'a': 1, 'b': 2, 'c': 3}
python merge dictionaries
dict1 = {'color': 'blue', 'shape': 'square'} dict2 = {'color': 'red', 'edges': 4} dict1.update(dict2) #if a key exists in both, it takes the value of the second dict # dict1 = {'color': 'red', 'shape': 'square', 'edges': 4} # dict2 is left unchanged
convert two lists to a single dictionary python
#initialize lists key_list = ['red', 'green', 'blue'] value_list = [1, 2, 3] #convert lists my_dict = {} for key in key_list: for value in value_list: my_dict[key] = value value_list.remove(value) break print(my_dict)
python merge list of dict into single dict
l = [{'a': 0}, {'b': 1}, {'c': 2}, {'d': 3}, {'e': 4, 'a': 4}] d = {k: v for x in l for k, v in x.items()} print(d) # {'a': 4, 'b': 1, 'c': 2, 'd': 3, 'e': 4}
how to merge a list of dictionaries in python
from collections import defaultdict dict_list = { 1: [{ "x": "test_1", "y": 1 }, { "x": "test_2", "y": 1 }, { "x": "test_1", "y": 2 } ], } print(dict_list) # {1: [{'x': 'test_1', 'y': 1}, {'x': 'test_2', 'y': 1}, {'x': 'test_1', 'y': 2}]} data = dict() for key, value in dict_list.items(): tmp = defaultdict(int) for index, item in enumerate(value): tmp[item.get("x") ] += item.get("y") for tmp_key, tmp_value in tmp.items(): data.setdefault(key, []).append( { "x": tmp_key, "y": tmp_value } ) print(data) # {1: [{'x': 'test_1', 'y': 3}, {'x': 'test_2', 'y': 1}]} # test 1 values is added together
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