python concatenate dictionaries

z = {**x, **y}  #python 3.5 and above

z = x | y    #python 3.9+ ONLY

def merge_two_dicts(x, y): # python 3.4 or lower
      z = x.copy()   # start with x's keys and values
      z.update(y)    # modifies z with y's keys and values & returns None
      return z

3.4
5
Ryan Friend 115 points

                                    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

3.4 (5 Votes)
0
3.64
4
Estermont 95 points

                                    z = {**x, **y}

3.64 (11 Votes)
0
4.14
7
John16384 90 points

                                    d1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}
d4 = dict(d1, **d2); d4.update(d3)

4.14 (7 Votes)
0
4.4
5
Verve 105 points

                                    # list_of_dictionaries contains a generic number of dictionaries
# having the same type of keys (str, int etc.) and type of values
global_dict = {}

for single_dict in list_of_dictionaries:
    global_dict.update(single_dict)

4.4 (5 Votes)
0
3.71
6

                                    d1.update(d2)

3.71 (7 Votes)
0
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