Домашни > Another brick in the wall > Решения > Решението на Надежда Койкова
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2 успешни теста
8 неуспешни теста
Код
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 1class Material:
 2    def __init__(self, value, density):
 3        self.value = value
 4        self.density = density
 5        
 6    @property
 7    def volume(self):
 8        return self.value/self.density
 9    
10    
11class Concrete(Material):
12    def __init__(self, value):
13        super().__init__(value, density=2500)
14  
15  
16class Brick(Material):
17    def __init__(self, value):
18        super().__init__(value, density=2000)
19  
20  
21class Stone(Material):
22    def __init__(self, value):
23        super().__init__(value, density=1600)
24
25
26class Wood(Material):
27    def __init__(self, value):
28        super().__init__(value, density=600)
29   
30   
31class Steel(Material):
32    def __init__(self, value):
33        super().__init__(value, density=7700)
34    
35    
36class Factory:
37    def __init__(self):
38        self.materials = []
39        
40    def __call__(self, *args, **kwargs):
41        if not args and not kwargs or args and kwargs:
42            raise ValueError('Invalid operation')
43        if args:
44            new_name = '_'.join(sorted(type(arg).__name__ for arg in args))
45            if new_name not in self.materials:
46                new_value = sum(arg.value for arg in args)
47                new_density = sum(arg.density for arg in args)/len(args)
48                new_class = type(new_name, (Material, ), {})
49                new_material = new_class(new_value, new_density)
50                self.materials.append(new_material)
51                return new_material
52        if kwargs:
53            for name, value in kwargs.items():
54                materials = [subcls for subcls in Material.__subclasses__() if subcls.__name__ == name]
55                if materials:
56                    self.materials.append(materials[0](value))
57                else:
58                    raise ValueError('The material is not in the list')
59            return tuple(self.materials) 
60
61    def can_build(self, volume):
62        total_volume = sum(material.volume for material in self.materials)
63        return total_volume >= volume

.FEFEEEFF.
======================================================================
ERROR: test_materials_between_factories (test.TestFactory.test_materials_between_factories)
Test materials sharing.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 156, in test_materials_between_factories
result2, = self.factory2(Brick_Concrete_Steel_Stone_Wood=2)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/solution.py", line 56, in __call__
self.materials.append(materials[0](value))
^^^^^^^^^^^^^^^^^^^
TypeError: Material.__init__() missing 1 required positional argument: 'density'

======================================================================
ERROR: test_named_arguments_with_dynamically_created_classes (test.TestFactory.test_named_arguments_with_dynamically_created_classes)
Test dynamically created classes uniqueness.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 145, in test_named_arguments_with_dynamically_created_classes
result2, = self.factory1(Brick_Concrete_Steel_Stone_Wood=2)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/solution.py", line 56, in __call__
self.materials.append(materials[0](value))
^^^^^^^^^^^^^^^^^^^
TypeError: Material.__init__() missing 1 required positional argument: 'density'

======================================================================
ERROR: test_positional_arguments_multiple_argument_from_initial_set (test.TestFactory.test_positional_arguments_multiple_argument_from_initial_set)
Test calling a factory using multiple positional arguments.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 97, in test_positional_arguments_multiple_argument_from_initial_set
brick_concrete_wood = type(result)(1700)
^^^^^^^^^^^^^^^^^^
TypeError: Material.__init__() missing 1 required positional argument: 'density'

======================================================================
ERROR: test_positional_arguments_multiple_argument_with_dynamics (test.TestFactory.test_positional_arguments_multiple_argument_with_dynamics)
Test calling a factory using multiple positional arguments.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 126, in test_positional_arguments_multiple_argument_with_dynamics
steel, wood = self.factory1(Steel=7700, Wood=1200)
^^^^^^^^^^^
ValueError: too many values to unpack (expected 2)

======================================================================
FAIL: test_can_build (test.TestFactory.test_can_build)
Test can_build methods.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 175, in test_can_build
self.assertFalse(self.factory2.can_build(4.0001))
AssertionError: True is not false

======================================================================
FAIL: test_named_arguments (test.TestFactory.test_named_arguments)
Test calling a factory using named arguments.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 66, in test_named_arguments
self.assertIs(type(result[1]), solution.Brick)
AssertionError: <class 'solution.Concrete'> is not <class 'solution.Brick'>

======================================================================
FAIL: test_positional_arguments_single_argument (test.TestFactory.test_positional_arguments_single_argument)
Test calling a factory using a sigle positional argument.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 80, in test_positional_arguments_single_argument
self.assertIs(type(concrete2), solution.Concrete)
AssertionError: <class 'solution.Concrete'> is not <class 'solution.Concrete'>

======================================================================
FAIL: test_positional_arguments_singletons (test.TestFactory.test_positional_arguments_singletons)
Test dynamically created classes uniqueness.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 138, in test_positional_arguments_singletons
self.assertIs(type(brick_concrete_wood1), type(brick_concrete_wood2))
AssertionError: <class 'solution.Brick_Concrete_Wood'> is not <class 'solution.Brick_Brick_Brick_Concrete_Wood_Concrete_Concrete_Wood_Wood'>

----------------------------------------------------------------------
Ran 10 tests in 0.009s

FAILED (failures=4, errors=4)

Дискусия
Георги Кунчев
26.11.2024 14:28
Много стегнато решение, което има потенциала да се превърне в добър продукт, ако се завърши :slightly_smiling_face:
История
Това решение има само една версия.