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from collections import defaultdict
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from collections import UserDict
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from collections.abc import Iterable
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import inspect
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START_POS = 'S'
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END_POS = 'E'
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class multivalued_dict(UserDict):
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'''
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multivalued_dict() -> new empty dictionary
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multivalued_dict(mapping) -> new dictionary initialized from a mapping object's
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(key, value) pairs
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multivalued_dict(iterable) -> new dictionary initialized as if via:
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d = {}
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for k, v in iterable:
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d[k].append(v)
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multivalued_dict(**kwargs) -> new dictionary initialized with the name=value pairs
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in the keyword argument list. For example: dict(one=1, two=2)
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>>> mv_d = multivalued_dict()
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>>> mv_d
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multivalued_dict({})
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> mv_d = multivalued_dict([['a', 'test-1'], ['b', 'test-2'], ['a', 'test-3']])
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>>> mv_d
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multivalued_dict({'a': ['test-1', 'test-3'], 'b': ['test-2']})
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>>> mv_d = multivalued_dict(a = 'test-1', b = 'test-2', c = 'test-3')
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> mv_d = multivalued_dict([['a', 'test-1'], ['c', 'test-3']], b = 'test-2')
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'c': ['test-3'], 'b': ['test-2']})
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>>> mv_d0 = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d0
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> mv_d = multivalued_dict(mv_d0)
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> multivalued_dict([['a', 'test-1']], [['b', 'test-2']])
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Traceback (most recent call last):
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TypeError: multivalued_dict expected at most 1 arguments, got 2
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'''
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__marker = object()
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@staticmethod
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def __is_self(v_self):
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if not multivalued_dict.__is_multivalued_dict__(v_self):
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raise TypeError(f"descriptor '{inspect.currentframe().f_back.f_code.co_name}' requires a 'multivalued_dict' object but received a '{v_self.__class__.__name__}'")
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@classmethod
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def __is_multivalued_dict__(cls, x):
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'''
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>>> mv_d = multivalued_dict()
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>>> multivalued_dict.__is_multivalued_dict__(mv_d)
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True
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'''
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return (isinstance(x, cls) or ((True if x.default_factory == type([]) else False) if isinstance(x, defaultdict) else False))
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@classmethod
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def fromkeys(cls, iterable, value = None):
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'''
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>>> multivalued_dict.fromkeys(['a', 'b', 'c'])
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multivalued_dict({'a': [None], 'b': [None], 'c': [None]})
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>>> multivalued_dict.fromkeys(['a', 'b', 'c'], 'test')
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multivalued_dict({'a': ['test'], 'b': ['test'], 'c': ['test']})
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'''
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dict_var = dict.fromkeys(iterable, value)
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return cls(dict_var)
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def __init__(self, *args, **kwargs):
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'''
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> mv_d.__init__({'d': 'test-4'})
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3'], 'd': ['test-4']})
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>>> multivalued_dict.__init__(mv_d, {'e': 'test-5'})
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3'], 'd': ['test-4'], 'e': ['test-5']})
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>>> mv_d.__init__({'a': 'test-6'})
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>>> mv_d
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multivalued_dict({'a': ['test-1', 'test-6'], 'b': ['test-2'], 'c': ['test-3'], 'd': ['test-4'], 'e': ['test-5']})
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>>> multivalued_dict.__init__('x')
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Traceback (most recent call last):
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TypeError: descriptor '__init__' requires a 'multivalued_dict' object but received a 'str'
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'''
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multivalued_dict.__is_self(self)
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len_of_args = len(args)
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if len_of_args > 1:
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raise TypeError(f'multivalued_dict expected at most 1 arguments, got {len_of_args}')
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else:
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if not hasattr(self, 'data'):
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self.data = defaultdict(list)
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if len_of_args == 1:
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initial_items = args[0]
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self.update(initial_items)
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if kwargs != dict():
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self.update(kwargs)
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def __repr__(self):
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multivalued_dict.__is_self(self)
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return f'multivalued_dict({dict(self.data)})'
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def __iter__(self):
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'''
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>>> multivalued_dict(multivalued_dict({'a': 'test-1'}))
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multivalued_dict({'a': ['test-1']})
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> multivalued_dict(mv_d.__iter__())
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multivalued_dict({'a': [['test-1']], 'b': [['test-2']], 'c': [['test-3']]})
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'''
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multivalued_dict.__is_self(self)
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return iter(self.data.items())
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def __len__(self):
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'''
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>>> mv_d = multivalued_dict([['a', 'test-1'], ['a', 'test-2'], ['a', 'test-3'], ['b', 'test-4']])
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>>> mv_d.__len__()
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2
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'''
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multivalued_dict.__is_self(self)
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return self.data.__len__()
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def __lenvalue__(self, key = __marker):
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'''
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>>> mv_d = multivalued_dict([['a', 1], ['a', 2], ['a', 3], ['b', 1], ['b', 2], ['c', 1]])
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>>> mv_d.__lenvalue__()
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6
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>>> mv_d.__lenvalue__('a')
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3
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'''
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multivalued_dict.__is_self(self)
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if key is self.__marker:
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return sum(map(len, self.data.values()))
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else:
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return len(self.data[key])
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def __getitem__(self, key):
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'''
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d['a']
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['test-1']
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>>> mv_d['d']
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Traceback (most recent call last):
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KeyError: 'd'
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'''
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multivalued_dict.__is_self(self)
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if key in self.data:
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return self.data[key]
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else:
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raise KeyError(key)
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def __matchkv__(self, key, value):
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'''
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>>> mv_d = multivalued_dict([['a', 1], ['a', 2], ['a', 3], ['b', 1], ['b', 2], ['c', 1]])
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>>> mv_d.__matchkv__('b', 3)
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False
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>>> mv_d.__matchkv__('a', 2)
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True
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>>> mv_d.__matchkv__('d', 1)
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False
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'''
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multivalued_dict.__is_self(self)
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return value in self.data[key]
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def __eq__(self, other):
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'''
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> mv_d == {'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']}
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True
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>>> mv_d == {'a': ['test-1'], 'b': ['test-2'], 'c': ['test-0']}
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False
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'''
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multivalued_dict.__is_self(self)
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return self.data.__eq__(other)
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def __contains__(self, key):
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'''
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
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>>> 'a' in mv_d
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True
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>>> 'd' in mv_d
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False
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'''
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multivalued_dict.__is_self(self)
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return self.data.__contains__(key)
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def __delkv__(self, key, value, allkv = True, direction = START_POS):
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'''
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>>> mv_d = multivalued_dict([['a', 'x'], ['a', 'y'], ['a', 'z'], ['a', 'y'], ['a', 'z'], ['a', 'y']])
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>>> mv_d
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multivalued_dict({'a': ['x', 'y', 'z', 'y', 'z', 'y']})
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>>> mv_d.__delkv__('a', 'y', False)
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>>> mv_d
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multivalued_dict({'a': ['x', 'z', 'y', 'z', 'y']})
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>>> mv_d.__delkv__('a', 'y', False, END_POS)
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>>> mv_d
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multivalued_dict({'a': ['x', 'z', 'y', 'z']})
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>>> mv_d.__delkv__('a', 'z')
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>>> mv_d
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multivalued_dict({'a': ['x', 'y']})
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'''
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multivalued_dict.__is_self(self)
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assert allkv in (True, False), '"allkv" can only be True or False'
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assert direction in (START_POS, END_POS), '"direction" can only be START_POS or END_POS'
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if allkv:
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while value in self.data[key]:
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self.data[key].remove(value)
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else:
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if direction == START_POS:
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self.data[key].remove(value)
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elif direction == END_POS:
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value_len = len(self.data[key])
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for i in range(value_len):
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if self.data[key][-1 - i] == value:
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self.data[key].__delitem__(-1 - i)
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break
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def __delitem__(self, key):
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'''
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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>>> mv_d.__delitem__('b')
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>>> mv_d
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multivalued_dict({'a': ['test-1'], 'c': ['test-3']})
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'''
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multivalued_dict.__is_self(self)
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self.data.__delitem__(key)
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254
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def __setitem__(self, key, item):
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255
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'''
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256
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>>> mv_d = multivalued_dict([['a', 'test-1'], ['a', 'test-2'], ['a', 'test-3'], ['b', 'test-4']])
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257
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>>> mv_d
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multivalued_dict({'a': ['test-1', 'test-2', 'test-3'], 'b': ['test-4']})
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260
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>>> mv_d.__setitem__('c', 'test-5')
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>>> mv_d
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multivalued_dict({'a': ['test-1', 'test-2', 'test-3'], 'b': ['test-4'], 'c': ['test-5']})
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>>> mv_d.__setitem__('a', 'test-0')
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265
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>>> mv_d
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266
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multivalued_dict({'a': ['test-0'], 'b': ['test-4'], 'c': ['test-5']})
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267
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'''
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268
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multivalued_dict.__is_self(self)
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269
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self.data.__setitem__(key, [item])
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270
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271
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def get(self, key, default = None):
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272
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'''
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273
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>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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274
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>>> mv_d.get('a')
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275
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['test-1']
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276
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>>> mv_d.get('d')
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277
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[None]
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278
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'''
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279
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multivalued_dict.__is_self(self)
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280
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return self.data.get(key, [default])
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281
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282
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def count(self, key, value):
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283
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'''
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284
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>>> mv_d = multivalued_dict([['a', 'x'], ['a', 'y'], ['a', 'y'], ['a', 'z'], ['a', 'z'], ['a', 'z']])
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285
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>>> mv_d.count('a', 'y')
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286
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2
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287
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'''
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288
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multivalued_dict.__is_self(self)
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289
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return self.data[key].count(value)
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290
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291
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def update(self, *args, **kwargs):
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292
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'''
|
|
293
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>>> mv_d = multivalued_dict()
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|
294
|
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>>> mv_d
|
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295
|
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multivalued_dict({})
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296
|
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297
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>>> mv_d.update({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
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298
|
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|
>>> mv_d
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299
|
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multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
|
|
300
|
|
|
|
|
301
|
|
|
>>> mv_d.update([['a', 'test-4'], ['a', 'test-5']])
|
|
302
|
|
|
>>> mv_d
|
|
303
|
|
|
multivalued_dict({'a': ['test-1', 'test-4', 'test-5'], 'b': ['test-2'], 'c': ['test-3']})
|
|
304
|
|
|
|
|
305
|
|
|
>>> mv_d.update(c = 'test-3')
|
|
306
|
|
|
>>> mv_d
|
|
307
|
|
|
multivalued_dict({'a': ['test-1', 'test-4', 'test-5'], 'b': ['test-2'], 'c': ['test-3', 'test-3']})
|
|
308
|
|
|
|
|
309
|
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|
>>> mv_d.update([['b', 'test-6'], ['c', 'test-7']], a = 'test-8')
|
|
310
|
|
|
>>> mv_d
|
|
311
|
|
|
multivalued_dict({'a': ['test-1', 'test-4', 'test-5', 'test-8'], 'b': ['test-2', 'test-6'], 'c': ['test-3', 'test-3', 'test-7']})
|
|
312
|
|
|
|
|
313
|
|
|
>>> mv_d.update(multivalued_dict({'d': 'test-9', 'e': 'test-10'}))
|
|
314
|
|
|
>>> mv_d
|
|
315
|
|
|
multivalued_dict({'a': ['test-1', 'test-4', 'test-5', 'test-8'], 'b': ['test-2', 'test-6'], 'c': ['test-3', 'test-3', 'test-7'], 'd': ['test-9'], 'e': ['test-10']})
|
|
316
|
|
|
|
|
317
|
|
|
>>> mv_d.update([['a', 'test-1']], [['b', 'test-2']])
|
|
318
|
|
|
Traceback (most recent call last):
|
|
319
|
|
|
TypeError: multivalued_dict expected at most 1 arguments, got 2
|
|
320
|
|
|
|
|
321
|
|
|
>>> mv_d.update(1)
|
|
322
|
|
|
Traceback (most recent call last):
|
|
323
|
|
|
TypeError: 'int' object is not iterable
|
|
324
|
|
|
|
|
325
|
|
|
>>> mv_d.update([1])
|
|
326
|
|
|
Traceback (most recent call last):
|
|
327
|
|
|
TypeError: cannot convert dictionary update sequence element #0 to a sequence
|
|
328
|
|
|
|
|
329
|
|
|
>>> mv_d.update([['1', '2', '3']])
|
|
330
|
|
|
Traceback (most recent call last):
|
|
331
|
|
|
ValueError: dictionary update sequence element #0 has length 3; 2 is required
|
|
332
|
|
|
|
|
333
|
|
|
>>> multivalued_dict.update('x')
|
|
334
|
|
|
Traceback (most recent call last):
|
|
335
|
|
|
TypeError: descriptor 'update' requires a 'multivalued_dict' object but received a 'str'
|
|
336
|
|
|
'''
|
|
337
|
|
|
multivalued_dict.__is_self(self)
|
|
338
|
|
|
len_of_args = len(args)
|
|
339
|
|
|
if len_of_args > 1:
|
|
340
|
|
|
raise TypeError(f'multivalued_dict expected at most 1 arguments, got {len_of_args}')
|
|
341
|
|
|
if len_of_args == 1:
|
|
342
|
|
|
update_items = args[0]
|
|
343
|
|
|
if not isinstance(update_items, Iterable):
|
|
344
|
|
|
raise TypeError(f"'{update_items.__class__.__name__}' object is not iterable")
|
|
345
|
|
|
if multivalued_dict.__is_multivalued_dict__(update_items):
|
|
346
|
|
|
for _key, _value in update_items.items():
|
|
347
|
|
|
self.data[_key].extend(_value)
|
|
348
|
|
|
elif isinstance(update_items, dict):
|
|
349
|
|
|
for _key, _value in update_items.items():
|
|
350
|
|
|
self.data[_key].append(_value)
|
|
351
|
|
|
else:
|
|
352
|
|
|
i = 0
|
|
353
|
|
|
for item in update_items:
|
|
354
|
|
|
if not isinstance(item, Iterable):
|
|
355
|
|
|
raise TypeError(f'cannot convert dictionary update sequence element #{i} to a sequence')
|
|
356
|
|
|
if len(item) != 2:
|
|
357
|
|
|
raise ValueError(f'dictionary update sequence element #{i} has length {len(item)}; 2 is required')
|
|
358
|
|
|
_key, _value = item
|
|
359
|
|
|
self.data[_key].append(_value)
|
|
360
|
|
|
i += 1
|
|
361
|
|
|
if kwargs != dict():
|
|
362
|
|
|
self.update(kwargs)
|
|
363
|
|
|
|
|
364
|
|
|
def setdefault(self, key, default = None):
|
|
365
|
|
|
'''
|
|
366
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'c': 'test-3'})
|
|
367
|
|
|
>>> mv_d.setdefault('a')
|
|
368
|
|
|
['test-1']
|
|
369
|
|
|
>>> mv_d.setdefault('b')
|
|
370
|
|
|
[None]
|
|
371
|
|
|
>>> mv_d
|
|
372
|
|
|
multivalued_dict({'a': ['test-1'], 'c': ['test-3'], 'b': [None]})
|
|
373
|
|
|
>>> mv_d.setdefault('d', 'test=4')
|
|
374
|
|
|
['test=4']
|
|
375
|
|
|
>>> mv_d
|
|
376
|
|
|
multivalued_dict({'a': ['test-1'], 'c': ['test-3'], 'b': [None], 'd': ['test=4']})
|
|
377
|
|
|
'''
|
|
378
|
|
|
multivalued_dict.__is_self(self)
|
|
379
|
|
|
return self.data.setdefault(key, [default])
|
|
380
|
|
|
|
|
381
|
|
|
def pop(self, key, default=__marker):
|
|
382
|
|
|
'''
|
|
383
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
|
|
384
|
|
|
>>> mv_d.pop('b')
|
|
385
|
|
|
['test-2']
|
|
386
|
|
|
>>> mv_d
|
|
387
|
|
|
multivalued_dict({'a': ['test-1'], 'c': ['test-3']})
|
|
388
|
|
|
|
|
389
|
|
|
>>> mv_d.pop('d')
|
|
390
|
|
|
Traceback (most recent call last):
|
|
391
|
|
|
KeyError: 'd'
|
|
392
|
|
|
|
|
393
|
|
|
>>> mv_d.pop('d', 'test-0')
|
|
394
|
|
|
['test-0']
|
|
395
|
|
|
>>> mv_d
|
|
396
|
|
|
multivalued_dict({'a': ['test-1'], 'c': ['test-3']})
|
|
397
|
|
|
'''
|
|
398
|
|
|
multivalued_dict.__is_self(self)
|
|
399
|
|
|
if default is self.__marker:
|
|
400
|
|
|
return self.data.pop(key)
|
|
401
|
|
|
else:
|
|
402
|
|
|
return self.data.pop(key, [default])
|
|
403
|
|
|
|
|
404
|
|
|
def popitem(self):
|
|
405
|
|
|
'''
|
|
406
|
|
|
D.popitem() -> (k, v), remove and return some (key, value) pair as a 2-tuple; but raise KeyError if D is empty.
|
|
407
|
|
|
|
|
408
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
|
|
409
|
|
|
>>> mv_d
|
|
410
|
|
|
multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
|
|
411
|
|
|
>>> mv_d.popitem()
|
|
412
|
|
|
('c', ['test-3'])
|
|
413
|
|
|
'''
|
|
414
|
|
|
multivalued_dict.__is_self(self)
|
|
415
|
|
|
return self.data.popitem()
|
|
416
|
|
|
|
|
417
|
|
|
def copy(self):
|
|
418
|
|
|
'''
|
|
419
|
|
|
D.copy() -> a shallow copy of D
|
|
420
|
|
|
|
|
421
|
|
|
>>> mv_d_a = multivalued_dict([['a', 1], ['a', 2], ['a', 3]])
|
|
422
|
|
|
>>> mv_d_b = mv_d_a.copy()
|
|
423
|
|
|
>>> mv_d_a
|
|
424
|
|
|
multivalued_dict({'a': [1, 2, 3]})
|
|
425
|
|
|
>>> mv_d_b
|
|
426
|
|
|
multivalued_dict({'a': [1, 2, 3]})
|
|
427
|
|
|
>>> mv_d_a['a'][1] = 99
|
|
428
|
|
|
>>> mv_d_a
|
|
429
|
|
|
multivalued_dict({'a': [1, 99, 3]})
|
|
430
|
|
|
>>> mv_d_b
|
|
431
|
|
|
multivalued_dict({'a': [1, 2, 3]})
|
|
432
|
|
|
'''
|
|
433
|
|
|
multivalued_dict.__is_self(self)
|
|
434
|
|
|
return multivalued_dict(self.data)
|
|
435
|
|
|
|
|
436
|
|
|
def items(self):
|
|
437
|
|
|
'''
|
|
438
|
|
|
D.items() -> a set-like object providing a view on D's items
|
|
439
|
|
|
|
|
440
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
|
|
441
|
|
|
>>> for k, v in mv_d.items():
|
|
442
|
|
|
... print(f'key = {k}, value = {v}')
|
|
443
|
|
|
...
|
|
444
|
|
|
key = a, value = ['test-1']
|
|
445
|
|
|
key = b, value = ['test-2']
|
|
446
|
|
|
key = c, value = ['test-3']
|
|
447
|
|
|
'''
|
|
448
|
|
|
multivalued_dict.__is_self(self)
|
|
449
|
|
|
return self.data.items()
|
|
450
|
|
|
|
|
451
|
|
|
def keys(self):
|
|
452
|
|
|
'''
|
|
453
|
|
|
D.keys() -> a set-like object providing a view on D's keys
|
|
454
|
|
|
|
|
455
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
|
|
456
|
|
|
>>> for k in mv_d.keys():
|
|
457
|
|
|
... print(f'key = {k}')
|
|
458
|
|
|
...
|
|
459
|
|
|
key = a
|
|
460
|
|
|
key = b
|
|
461
|
|
|
key = c
|
|
462
|
|
|
'''
|
|
463
|
|
|
multivalued_dict.__is_self(self)
|
|
464
|
|
|
return self.data.keys()
|
|
465
|
|
|
|
|
466
|
|
|
def values(self):
|
|
467
|
|
|
'''
|
|
468
|
|
|
D.values() -> an object providing a view on D's values
|
|
469
|
|
|
|
|
470
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
|
|
471
|
|
|
>>> for v in mv_d.values():
|
|
472
|
|
|
... print(f'value = {v}')
|
|
473
|
|
|
...
|
|
474
|
|
|
value = ['test-1']
|
|
475
|
|
|
value = ['test-2']
|
|
476
|
|
|
value = ['test-3']
|
|
477
|
|
|
'''
|
|
478
|
|
|
multivalued_dict.__is_self(self)
|
|
479
|
|
|
return self.data.values()
|
|
480
|
|
|
|
|
481
|
|
|
def clear(self):
|
|
482
|
|
|
'''
|
|
483
|
|
|
D.clear() -> None. Remove all items from D.
|
|
484
|
|
|
|
|
485
|
|
|
>>> mv_d = multivalued_dict({'a': 'test-1', 'b': 'test-2', 'c': 'test-3'})
|
|
486
|
|
|
>>> mv_d
|
|
487
|
|
|
multivalued_dict({'a': ['test-1'], 'b': ['test-2'], 'c': ['test-3']})
|
|
488
|
|
|
>>> mv_d.clear()
|
|
489
|
|
|
>>> mv_d
|
|
490
|
|
|
multivalued_dict({})
|
|
491
|
|
|
'''
|
|
492
|
|
|
multivalued_dict.__is_self(self)
|
|
493
|
|
|
self.data.clear()
|
|
494
|
|
|
|
|
495
|
|
|
def reverse(self, key):
|
|
496
|
|
|
'''
|
|
497
|
|
|
>>> mv_d = multivalued_dict([['a', 1], ['a', 2], ['a', 3]])
|
|
498
|
|
|
>>> mv_d
|
|
499
|
|
|
multivalued_dict({'a': [1, 2, 3]})
|
|
500
|
|
|
>>> mv_d.reverse('a')
|
|
501
|
|
|
>>> mv_d
|
|
502
|
|
|
multivalued_dict({'a': [3, 2, 1]})
|
|
503
|
|
|
'''
|
|
504
|
|
|
multivalued_dict.__is_self(self)
|
|
505
|
|
|
self.data[key].reverse()
|
|
506
|
|
|
|
fsssosei /
MultivaluedDict
