Python - Compare Dictionaries on certain Keys

Python - Compare Dictionaries on certain Keys

To compare dictionaries based on certain keys, you can use dictionary comprehension and the == operator. Here's how you can compare two dictionaries on specific keys:

Example:

Let's say you have two dictionaries and a list of keys you want to compare:

dict1 = { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } dict2 = { 'a': 1, 'b': 2, 'c': 3, 'd': 5 } keys_to_compare = ['a', 'b', 'c']

To compare the two dictionaries based on the keys in keys_to_compare, you can use the following approach:

sub_dict1 = {key: dict1[key] for key in keys_to_compare if key in dict1} sub_dict2 = {key: dict2[key] for key in keys_to_compare if key in dict2} are_equal = sub_dict1 == sub_dict2 print(are_equal) # Outputs: True

In this example, sub_dict1 and sub_dict2 are subsets of dict1 and dict2 based on the keys in keys_to_compare. The two subsets are then compared using the == operator. The result (True or False) indicates whether the dictionaries are equal based on the specified keys.

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