enum

from enum import Enum

class Color(Enum):
    RED = 1
    GREEN = 2
    BLUE = 3

# Example usage:
print(Color.RED)
print(Color.GREEN)
print(Color.BLUE)

# Access by name
print(Color.RED.name)   # Output: RED
print(Color.RED.value)  # Output: 1

# Access by value
print(Color(1))         # Output: Color.RED

for color in Color:
    print(f"{color.name} = {color.value}")

# Comparing members
print(Color.RED == Color.RED)      # Output: True
print(Color.RED is Color.RED)      # Output: True
print(Color.RED == Color.GREEN)    # Output: False

# Enum members can also be compared using their values
print(Color.RED.value == 1)        # Output: True
print(Color.RED.value == 2)        # Output: False

from enum import Enum

class StatusCode(Enum):
    SUCCESS = 200
    NOT_FOUND = 404
    SERVER_ERROR = 500

# Example usage:
print(StatusCode.SUCCESS)       # Output: StatusCode.SUCCESS
print(StatusCode.SUCCESS.value) # Output: 200

from enum import Enum, auto

class Animal(Enum):
    DOG = auto()
    CAT = auto()
    HORSE = auto()

# Example usage:
print(Animal.DOG.value)  # Output: 1
print(Animal.CAT.value)  # Output: 2
print(Animal.HORSE.value) # Output: 3

from enum import Enum

class Operation(Enum):
    ADD = "+"
    SUBTRACT = "-"
    MULTIPLY = "*"
    DIVIDE = "/"

    def describe(self):
        return f"This is an operation for {self.name}."
    
    def apply(self, a, b):
        if self == Operation.ADD:
            return a + b
        elif self == Operation.SUBTRACT:
            return a - b
        elif self == Operation.MULTIPLY:
            return a * b
        elif self == Operation.DIVIDE:
            return a / b

# Example usage:
op = Operation.ADD
print(op.describe())  # Output: This is an operation for ADD.
print(op.apply(4, 2))  # Output: 6

from enum import Flag, auto

class Permission(Flag):
    READ = auto()
    WRITE = auto()
    EXECUTE = auto()

# Example usage:
perm = Permission.READ | Permission.WRITE
print(perm)                    # Output: Permission.READ|WRITE
print(Permission.READ in perm) # Output: True
print(Permission.EXECUTE in perm) # Output: False

from enum import Enum

class Weekday(Enum):
    MONDAY = 1
    TUESDAY = 2
    WEDNESDAY = 3
    THURSDAY = 4
    FRIDAY = 5
    SATURDAY = 6
    SUNDAY = 7
    # Alias
    MON = MONDAY

# Example usage:
print(Weekday.MON)       # Output: Weekday.MONDAY
print(Weekday.MON.name)  # Output: MONDAY
print(Weekday.MON.value) # Output: 1

from enum import Enum

class Role(Enum):
    USER = "user"
    ADMIN = "admin"
    GUEST = "guest"

# Example usage:
print(Role.USER)       # Output: Role.USER
print(Role.USER.value) # Output: user

from enum import Enum, auto

class Ordinal(Enum):
    def _generate_next_value_(name, start, count, last_values):
        return name.lower()

    FIRST = auto()
    SECOND = auto()
    THIRD = auto()

# Example usage:
print(Ordinal.FIRST)   # Output: Ordinal.first
print(Ordinal.SECOND)  # Output: Ordinal.second
print(Ordinal.THIRD)   # Output: Ordinal.third