Домашни > Another brick in the wall > Решения > Решението на Юлиана Иванова
Резултати
3 точки от тестове
0 точки от учител
3 точки общо
3 успешни теста
7 неуспешни теста
Код 
 1class Material:
 2    def __init__(self, mass:int):
 3        self.mass = mass
 4
 5    @property
 6    def volume(self):
 7        return self.mass/self.density
 8    
 9
10class Concrete(Material):
11    density = 2500
12
13
14class Brick(Material):
15    density = 2000
16
17
18class Stone(Material):
19    density = 1600
20
21
22class Wood(Material):
23    density = 600
24
25
26class Steel(Material):
27    density = 7700
28
29
30class Factory:
31    def __init__(self):
32        self.materials = {
33            "Concrete": Concrete,
34            "Brick": Brick,
35            "Stone": Stone,
36            "Wood": Wood,
37            "Steel": Steel
38        }
39
40    def __call__(self, *args, **kwargs):
41        if args and kwargs:
42            raise ValueError("Can't call both *args and **kwargs")
43        
44        if kwargs:
45           return self._materials_from_named_argument(**kwargs)
46        elif args:
47            return self._materials_from_pos_argument(*args)
48        
49    def _materials_from_named_argument(self, **kwargs):
50        materials = []
51        for material, mass in kwargs.items():
52            if material not in self.materials:
53                raise ValueError("Invalid material")
54            curr_class = self.materials[material]
55            materials.append(curr_class(mass))
56        return tuple(materials)
57
58    def _materials_from_pos_argument(self, *args):
59        used_materials = []
60        final_mass = 0
61
62        for material in args:
63            material_name = material.__class__.__name__
64            if material_name not in self.materials:
65                raise ValueError("Invalid material")
66            used_materials.append(material)
67            final_mass += material.mass
68
69        class_name = "_".join(sorted(material.__class__.__name__ for material in used_materials))
70        if class_name in self.materials:
71            return self.materials[class_name]
72            
73        avg_density = sum(material.density for material in used_materials) / len(used_materials)
74
75        # Volume от Material не работи.....
76        new_material = type(class_name, (Material,), {"density": avg_density})
77        self.materials[class_name] = new_material
78        return new_material(final_mass) 
79
80    def can_build(self, wall_volume:int):
81        sum_volume = 0
82        for material in self.materials.values():
83            volume = material.volume
84
85        return sum_volume >= wall_volume

FFE..FFFF.
======================================================================
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 45, in __call__
return self._materials_from_named_argument(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/solution.py", line 53, in _materials_from_named_argument
raise ValueError("Invalid material")
ValueError: Invalid material

======================================================================
FAIL: test_bad_input (test.TestFactory.test_bad_input)
Test calling a factory using bad input.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 46, in test_bad_input
with self.assertRaises(ValueError):
AssertionError: ValueError not raised

======================================================================
FAIL: test_can_build (test.TestFactory.test_can_build)
Test can_build methods.
----------------------------------------------------------------------
Traceback (most recent call last):
File "/tmp/test.py", line 174, in test_can_build
self.assertTrue(self.factory1.can_build(2.0))
AssertionError: False is not true

======================================================================
FAIL: 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 101, in test_positional_arguments_multiple_argument_from_initial_set
with self.assertRaises(AssertionError):
AssertionError: AssertionError not raised

======================================================================
FAIL: 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 128, in test_positional_arguments_multiple_argument_with_dynamics
self.assertEqual(mega_material.__class__.__name__,
AssertionError: 'Brick_Concrete_Stone_Steel_Wood' != 'Brick_Concrete_Steel_Stone_Wood'
- Brick_Concrete_Stone_Steel_Wood
? ------
+ Brick_Concrete_Steel_Stone_Wood
? ++++++

======================================================================
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 'type'> 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 'type'>

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

FAILED (failures=6, errors=1)

Дискусия
История
f1class Material:f1class Material:
2    def __init__(self, mass:int):2    def __init__(self, mass:int):
3        self.mass = mass3        self.mass = mass
44
5    @property5    @property
6    def volume(self):6    def volume(self):
7        return self.mass/self.density7        return self.mass/self.density
8    8    
99
10class Concrete(Material):10class Concrete(Material):
11    density = 250011    density = 2500
1212
1313
14class Brick(Material):14class Brick(Material):
15    density = 200015    density = 2000
1616
1717
18class Stone(Material):18class Stone(Material):
19    density = 160019    density = 1600
2020
2121
22class Wood(Material):22class Wood(Material):
23    density = 60023    density = 600
2424
2525
26class Steel(Material):26class Steel(Material):
27    density = 770027    density = 7700
2828
2929
30class Factory:30class Factory:
31    def __init__(self):31    def __init__(self):
32        self.materials = {32        self.materials = {
n33            "Concrete":Concrete,n33            "Concrete": Concrete,
34            "Brick":Brick,34            "Brick": Brick,
35            "Stone":Stone,35            "Stone": Stone,
36            "Wood":Wood,36            "Wood": Wood,
37            "Steel":Steel37            "Steel": Steel
38        }38        }
3939
40    def __call__(self, *args, **kwargs):40    def __call__(self, *args, **kwargs):
41        if args and kwargs:41        if args and kwargs:
42            raise ValueError("Can't call both *args and **kwargs")42            raise ValueError("Can't call both *args and **kwargs")
43        43        
44        if kwargs:44        if kwargs:
n45            materials = []n45           return self._materials_from_named_argument(**kwargs)
46            for material, mass in kwargs.items():
47                if material not in self.materials:
48                    raise ValueError("Invalid material")
49                curr_class = self.materials[material]
50                materials.append(curr_class(mass))
51            return tuple(materials)
52        elif args:46        elif args:
nn47            return self._materials_from_pos_argument(*args)
48        
49    def _materials_from_named_argument(self, **kwargs):
53            used_materials = []50        materials = []
54            final_mass = 051        for material, mass in kwargs.items():
52            if material not in self.materials:
53                raise ValueError("Invalid material")
54            curr_class = self.materials[material]
55            materials.append(curr_class(mass))
56        return tuple(materials)
5557
n56            for material in args:n58    def _materials_from_pos_argument(self, *args):
57                material_name = material.__class__.__name__59        used_materials = []
58                if material_name not in self.materials:60        final_mass = 0
59                    raise ValueError("Invalid material")
60                used_materials.append(material)
61                final_mass += material.mass
6261
nn62        for material in args:
63            material_name = material.__class__.__name__
64            if material_name not in self.materials:
65                raise ValueError("Invalid material")
66            used_materials.append(material)
67            final_mass += material.mass
68 
63            class_name = "_".join(sorted(material.__class__.__name__ for material in used_materials))69        class_name = "_".join(sorted(material.__class__.__name__ for material in used_materials))
64            if class_name in self.materials:70        if class_name in self.materials:
65                return self.materials[class_name]71            return self.materials[class_name]
66            72            
n67            avg_density = sum(material.density for material in used_materials) / len(used_materials)n73        avg_density = sum(material.density for material in used_materials) / len(used_materials)
6874
n69            # Volume от Material не работи.....n75        # Volume от Material не работи.....
70            new_material = type(class_name, (Material,), {"density": avg_density, "volume": property(final_mass/avg_density)})76        new_material = type(class_name, (Material,), {"density": avg_density})
71            self.materials[class_name] = new_material77        self.materials[class_name] = new_material
72            return new_material(final_mass)78        return new_material(final_mass) 
73        79 
74    def can_build(self, wall_volume:int):80    def can_build(self, wall_volume:int):
75        sum_volume = 081        sum_volume = 0
76        for material in self.materials.values():82        for material in self.materials.values():
77            volume = material.volume83            volume = material.volume
n78            print(volume)n
7984
t80        if sum_volume >= wall_volume:t85        return sum_volume >= wall_volume
81            return True
82 
83        return False
Legends
Colors
 Added 
Changed
Deleted
Links
(f)irst change
(n)ext change
(t)op