Python: Check if one dictionary is a subset of another larger dictionary

Question

I\'m trying to write a custom filter method that takes an arbitrary number of kwargs and returns a list containing the elements of a database-like list that contain

Answer 1

Use this wrapper object that provides partial comparison and nice diffs:

class DictMatch(dict):
    """ Partial match of a dictionary to another one """
    def __eq__(self, other: dict):
        assert isinstance(other, dict)
        return all(other[name] == value for name, value in self.items())

actual_name = {'praenomen': 'Gaius', 'nomen': 'Julius', 'cognomen': 'Caesar'}
expected_name = DictMatch({'praenomen': 'Gaius'})  # partial match
assert expected_name == actual_name  # True