How to take a subset of a dictionary in Python

Taking a subset of a dictionary returns a new dictionary containing specified key-value pairs from the original dictionary. For example, {“a”: 1, “c”: 3} is a subset of {“a”: 1, “b”: 2, “c”: 3, “d”: 4}.

Solution for How to take a subset of a dictionary in Python : You can use a dictionary comprehension to take a subset of a dictionary Use the syntax {key: value for key, value in dict.items() if condition} to create a new dictionary containing each key: value pair in dict for which condition is True. dict.items() returns a set-like object which allows for iteration over dict’s key-value pairs.

Use the syntax {key: dict[key] for key in keys} to extract each key-value pair in dict for which the key is in the list keys.

a_dictionary = {"a": 1, "b": 2, "c": 3, "d": 4}


how-to-take-a-subset-of-a-dictionary-in-python