Python enum.value方法代碼示例

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def as_enum(fmt, enum):
    def internal(obj, data):
        s = struct.calcsize(fmt)
        value = struct.unpack(fmt, data[:s])[0]
        return s, enum(value)

    def stream(obj, stream):
        s = struct.calcsize(fmt)
        value = struct.unpack(fmt, stream.read(s))[0]
        return enum(value)

    def encode(enum):
        return struct.pack(fmt, enum.value)

    internal.stream = stream
    internal.encode = encode
    return internal 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_enum_duplicates(self):
        class Season(Enum):
            SPRING = 1
            SUMMER = 2
            AUTUMN = FALL = 3
            WINTER = 4
            ANOTHER_SPRING = 1
        lst = list(Season)
        self.assertEqual(
            lst,
            [Season.SPRING, Season.SUMMER,
             Season.AUTUMN, Season.WINTER,
            ])
        self.assertIs(Season.FALL, Season.AUTUMN)
        self.assertEqual(Season.FALL.value, 3)
        self.assertEqual(Season.AUTUMN.value, 3)
        self.assertIs(Season(3), Season.AUTUMN)
        self.assertIs(Season(1), Season.SPRING)
        self.assertEqual(Season.FALL.name, 'AUTUMN')
        self.assertEqual(
                [k for k,v in Season.__members__.items() if v.name != k],
                ['FALL', 'ANOTHER_SPRING'],
                ) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_programatic_function_string(self):
        SummerMonth = Enum('SummerMonth', 'june july august')
        lst = list(SummerMonth)
        self.assertEqual(len(lst), len(SummerMonth))
        self.assertEqual(len(SummerMonth), 3, SummerMonth)
        self.assertEqual(
                [SummerMonth.june, SummerMonth.july, SummerMonth.august],
                lst,
                )
        for i, month in enumerate('june july august'.split(), 1):
            e = SummerMonth(i)
            self.assertEqual(int(e.value), i)
            self.assertNotEqual(e, i)
            self.assertEqual(e.name, month)
            self.assertIn(e, SummerMonth)
            self.assertIs(type(e), SummerMonth) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_programatic_function_string_list(self):
        SummerMonth = Enum('SummerMonth', ['june', 'july', 'august'])
        lst = list(SummerMonth)
        self.assertEqual(len(lst), len(SummerMonth))
        self.assertEqual(len(SummerMonth), 3, SummerMonth)
        self.assertEqual(
                [SummerMonth.june, SummerMonth.july, SummerMonth.august],
                lst,
                )
        for i, month in enumerate('june july august'.split(), 1):
            e = SummerMonth(i)
            self.assertEqual(int(e.value), i)
            self.assertNotEqual(e, i)
            self.assertEqual(e.name, month)
            self.assertIn(e, SummerMonth)
            self.assertIs(type(e), SummerMonth) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_programatic_function_string_list_with_start(self):
        SummerMonth = Enum('SummerMonth', ['june', 'july', 'august'], start=20)
        lst = list(SummerMonth)
        self.assertEqual(len(lst), len(SummerMonth))
        self.assertEqual(len(SummerMonth), 3, SummerMonth)
        self.assertEqual(
                [SummerMonth.june, SummerMonth.july, SummerMonth.august],
                lst,
                )
        for i, month in enumerate('june july august'.split(), 20):
            e = SummerMonth(i)
            self.assertEqual(int(e.value), i)
            self.assertNotEqual(e, i)
            self.assertEqual(e.name, month)
            self.assertIn(e, SummerMonth)
            self.assertIs(type(e), SummerMonth) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_programatic_function_iterable(self):
        SummerMonth = Enum(
                'SummerMonth',
                (('june', 1), ('july', 2), ('august', 3))
                )
        lst = list(SummerMonth)
        self.assertEqual(len(lst), len(SummerMonth))
        self.assertEqual(len(SummerMonth), 3, SummerMonth)
        self.assertEqual(
                [SummerMonth.june, SummerMonth.july, SummerMonth.august],
                lst,
                )
        for i, month in enumerate('june july august'.split(), 1):
            e = SummerMonth(i)
            self.assertEqual(int(e.value), i)
            self.assertNotEqual(e, i)
            self.assertEqual(e.name, month)
            self.assertIn(e, SummerMonth)
            self.assertIs(type(e), SummerMonth) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_programatic_function_from_dict(self):
        SummerMonth = Enum(
                'SummerMonth',
                OrderedDict((('june', 1), ('july', 2), ('august', 3)))
                )
        lst = list(SummerMonth)
        self.assertEqual(len(lst), len(SummerMonth))
        self.assertEqual(len(SummerMonth), 3, SummerMonth)
        self.assertEqual(
                [SummerMonth.june, SummerMonth.july, SummerMonth.august],
                lst,
                )
        for i, month in enumerate('june july august'.split(), 1):
            e = SummerMonth(i)
            self.assertEqual(int(e.value), i)
            self.assertNotEqual(e, i)
            self.assertEqual(e.name, month)
            self.assertIn(e, SummerMonth)
            self.assertIs(type(e), SummerMonth) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_duplicate_values_give_unique_enum_items(self):
        class AutoNumber(Enum):
            first = ()
            second = ()
            third = ()
            def __new__(cls):
                value = len(cls.__members__) + 1
                obj = object.__new__(cls)
                obj._value_ = value
                return obj
            def __int__(self):
                return int(self._value_)
        self.assertEqual(
                list(AutoNumber),
                [AutoNumber.first, AutoNumber.second, AutoNumber.third],
                )
        self.assertEqual(int(AutoNumber.second), 2)
        self.assertEqual(AutoNumber.third.value, 3)
        self.assertIs(AutoNumber(1), AutoNumber.first) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_no_duplicates(self):
        class UniqueEnum(Enum):
            def __init__(self, *args):
                cls = self.__class__
                if any(self.value == e.value for e in cls):
                    a = self.name
                    e = cls(self.value).name
                    raise ValueError(
                            "aliases not allowed in UniqueEnum:  %r --> %r"
                            % (a, e)
                            )
        class Color(UniqueEnum):
            red = 1
            green = 2
            blue = 3
        with self.assertRaises(ValueError):
            class Color(UniqueEnum):
                red = 1
                green = 2
                blue = 3
                grene = 2 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_nonhash_value(self):
        class AutoNumberInAList(Enum):
            def __new__(cls):
                value = [len(cls.__members__) + 1]
                obj = object.__new__(cls)
                obj._value_ = value
                return obj
        class ColorInAList(AutoNumberInAList):
            red = ()
            green = ()
            blue = ()
        self.assertEqual(list(ColorInAList), [ColorInAList.red, ColorInAList.green, ColorInAList.blue])
        for enum, value in zip(ColorInAList, range(3)):
            value += 1
            self.assertEqual(enum.value, [value])
            self.assertIs(ColorInAList([value]), enum) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_conflicting_types_resolved_in_new(self):
        class LabelledIntEnum(int, Enum):
            def __new__(cls, *args):
                value, label = args
                obj = int.__new__(cls, value)
                obj.label = label
                obj._value_ = value
                return obj

        class LabelledList(LabelledIntEnum):
            unprocessed = (1, "Unprocessed")
            payment_complete = (2, "Payment Complete")

        self.assertEqual(list(LabelledList), [LabelledList.unprocessed, LabelledList.payment_complete])
        self.assertEqual(LabelledList.unprocessed, 1)
        self.assertEqual(LabelledList(1), LabelledList.unprocessed) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_inspect_getmembers(self):
        values = dict((
                ('__class__', EnumMeta),
                ('__doc__', 'An enumeration.'),
                ('__members__', self.Color.__members__),
                ('__module__', __name__),
                ('blue', self.Color.blue),
                ('green', self.Color.green),
                ('name', Enum.__dict__['name']),
                ('red', self.Color.red),
                ('value', Enum.__dict__['value']),
                ))
        result = dict(inspect.getmembers(self.Color))
        self.assertEqual(values.keys(), result.keys())
        failed = False
        for k in values.keys():
            if result[k] != values[k]:
                print()
                print('\n%s\n     key: %s\n  result: %s\nexpected: %s\n%s\n' %
                        ('=' * 75, k, result[k], values[k], '=' * 75), sep='')
                failed = True
        if failed:
            self.fail("result does not equal expected, see print above") 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_init(self):
        class Planet(Enum):
            MERCURY = (3.303e+23, 2.4397e6)
            VENUS   = (4.869e+24, 6.0518e6)
            EARTH   = (5.976e+24, 6.37814e6)
            MARS    = (6.421e+23, 3.3972e6)
            JUPITER = (1.9e+27,   7.1492e7)
            SATURN  = (5.688e+26, 6.0268e7)
            URANUS  = (8.686e+25, 2.5559e7)
            NEPTUNE = (1.024e+26, 2.4746e7)
            def __init__(self, mass, radius):
                self.mass = mass       # in kilograms
                self.radius = radius   # in meters
            @property
            def surface_gravity(self):
                # universal gravitational constant  (m3 kg-1 s-2)
                G = 6.67300E-11
                return G * self.mass / (self.radius * self.radius)
        self.assertEqual(round(Planet.EARTH.surface_gravity, 2), 9.80)
        self.assertEqual(Planet.EARTH.value, (5.976e+24, 6.37814e6)) 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_inspect_getmembers(self):
        values = dict((
                ('__class__', EnumMeta),
                ('__doc__', None),
                ('__members__', self.Color.__members__),
                ('__module__', __name__),
                ('blue', self.Color.blue),
                ('green', self.Color.green),
                ('name', Enum.__dict__['name']),
                ('red', self.Color.red),
                ('value', Enum.__dict__['value']),
                ))
        result = dict(inspect.getmembers(self.Color))
        self.assertEqual(values.keys(), result.keys())
        failed = False
        for k in values.keys():
            if result[k] != values[k]:
                print()
                print('\n%s\n     key: %s\n  result: %s\nexpected: %s\n%s\n' %
                        ('=' * 75, k, result[k], values[k], '=' * 75), sep='')
                failed = True
        if failed:
            self.fail("result does not equal expected, see print above") 

# 需要導入模塊: import enum [as 別名]
# 或者: from enum import value [as 別名]
def test_programmatic_function_string_with_start(self):
        SummerMonth = Enum('SummerMonth', 'june july august', start=10)
        lst = list(SummerMonth)
        self.assertEqual(len(lst), len(SummerMonth))
        self.assertEqual(len(SummerMonth), 3, SummerMonth)
        self.assertEqual(
                [SummerMonth.june, SummerMonth.july, SummerMonth.august],
                lst,
                )
        for i, month in enumerate('june july august'.split(), 10):
            e = SummerMonth(i)
            self.assertEqual(int(e.value), i)
            self.assertNotEqual(e, i)
            self.assertEqual(e.name, month)
            self.assertIn(e, SummerMonth)
            self.assertIs(type(e), SummerMonth)