Uses of Enum

enum_example.py

# Basic Approach
from enum import Enum

class Status(Enum):
    PENDING = "pending"
    APPROVED = "approved"
    REJECTED = "rejected"
def process(status: Status):
    if status == Status.APPROVED:
        print("Processing approved request")
        
# Extended by use of @property
from enum import Enum

class Status(Enum):
    PENDING = "pending"
    APPROVED = "approved"
    REJECTED = "rejected"
    @property
    def description(self):
        descriptions = {
            "pending": "The request is pending approval.",
            "approved": "The request has been approved.",
            "rejected": "The request was rejected."
        }
        return descriptions[self.value]

# Over the top approach
from enum import Enum

class Status(Enum):
    PENDING = ("pending", "🟡")
    APPROVED = ("approved", "✅")
    REJECTED = ("rejected", "❌")
    def __init__(self, value, emoji):
        self._value_ = value
        self.emoji = emoji
    @property
    def description(self):
        descriptions = {
            "pending": "The request is pending approval.",
            "approved": "The request has been approved.",
            "rejected": "The request was rejected."
        }
        return descriptions[self.value]
# Usage
print(Status.PENDING.emoji)  # Output: 🟡
print(Status.APPROVED.description)  # Output: The request has been approved.