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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _filter(self, criteria: Q, db):
 """Recursive function to filter items from dictionary"""

        # Filter the dictionary objects based on the filters
        negated = criteria.negated
        input_db = None

        if criteria.connector == criteria.AND:
            # Trim database records over successive iterations
            #   Whatever is left at the end satisfy all criteria (AND)
            input_db = db
            for child in criteria.children:
                if isinstance(child, Q):
                    input_db = self._filter(child, input_db)
                else:
                    input_db = self.provider._evaluate_lookup(child[0], child[1],
                                                              negated, input_db)
        else:
            # Grow database records over successive iterations
            #   Whatever is left at the end satisfy any criteria (OR)
            input_db = {}
            for child in criteria.children:
                if isinstance(child, Q):
                    results = self._filter(child, db)
                else:
                    results = self.provider._evaluate_lookup(child[0], child[1], negated, db)

                input_db = {**input_db, **results}

        return input_db