Python Dictionary Aggregation

Python dictionary aggregation refers to the process of combining multiple dictionaries into a single dictionary, typically by merging their key-value pairs.

dict1 = {

'a' : 1,

'b': 2,

'c' : 3

}

dict2 = {

    'd' : 4,

    'a': 5

}

res = { k : dict1.get(k,0) + dict2.get(k,0) for k in set(dict1 | dict2) }

print(res)

#output: {'b': 2, 'c': 3, 'd': 4, 'a': 6}

As you can see from the above, there are two dictionaries, dict1 and dict2, respectively. We employed the following advice to accomplish the aggregation:

• Dictionary Comprehensions
• Set()
• for loop
• get() method 

dict1 "a" value  "1" and dict2 "a" value "5" after the aggregation returns "6" .

You can learn how the get() method and dictionary comprehensions operate here, which will improve your ability to construct logic.