MockSet has 40 functions (exceeds 20 allowed). Consider refactoring.

Open

class MockSet(MagicMock, metaclass=MockSetMeta):
    EVENT_ADDED = 'added'
    EVENT_UPDATED = 'updated'
    EVENT_SAVED = 'saved'
    EVENT_DELETED = 'deleted'

File query.py has 371 lines of code (exceeds 250 allowed). Consider refactoring.

Open

import datetime
import random
from collections import OrderedDict, namedtuple
from unittest.mock import Mock, MagicMock, PropertyMock

Function aggregate has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.

Open

    def aggregate(self, *args, **kwargs):
        result = {}

        for expr in set(args):
            kwargs['{0}__{1}'.format(expr.source_expressions[0].name, expr.function).lower()] = expr

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Function _item_values has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.

Open

    def _item_values(self, item, fields):
        field_buckets = {}
        result_count = 1

        if len(fields) == 0:

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Function load_fields has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    def load_fields(self, *field_names):
        fields = {name: MockField(name) for name in field_names}

        for key in ('_forward_fields_map', 'parents', 'fields_map'):
            self.__dict__[key] = {}

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Function _get_order_fields has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

    def _get_order_fields(self, fields, field_name):
        if fields and field_name is not None:
            raise ValueError('Cannot use both positional arguments and the field_name keyword argument.')

        if field_name is not None:

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Function update_or_create has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    def update_or_create(self, defaults=None, **attrs):
        if defaults is not None:
            validate_mock_set(self)
        defaults = defaults or {}
        lookup = attrs.copy()

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Function annotate has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    def annotate(self, **kwargs):
        results = list(self.items)
        for key, value in kwargs.items():
            for row in results:
                if not hasattr(row, '_annotated_fields'):

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Function _values_row has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    def _values_row(self, values_dict, fields, **kwargs):
        flat = kwargs.pop('flat', False)
        named = kwargs.pop('named', False)

        if kwargs:

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