Simplifying Complex Logic with Python's match Statement

Explore Python 3.10’s match statement for cleaner, more readable conditional logic using pattern matching. A modern alternative to verbose if-elif chains.

May 18, 2025

Abhimanyu Saharan

Conditional logic is a fundamental part of programming. For years, Python has handled this using familiar if-elif-else chains. While effective, these chains can become cumbersome and hard to manage when branching logic becomes complex or deeply nested.

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def http_status(code):
    match code:
        case 200:
            return "OK"
        case 404:
            return "Not Found"
        case 500:
            return "Internal Server Error"
        case _:
            return "Unknown Status"

def parse_command(command):
    if command == "start":
        return "Starting service"
    elif command == "stop":
        return "Stopping service"
    elif command == "restart":
        return "Restarting service"
    else:
        return "Unknown command"

def parse_command(command):
    match command:
        case "start":
            return "Starting service"
        case "stop":
            return "Stopping service"
        case "restart":
            return "Restarting service"
        case _:
            return "Unknown command"

def describe_point(point):
    match point:
        case (0, 0):
            return "Origin"
        case (0, y):
            return f"Y-axis at y={y}"
        case (x, 0):
            return f"X-axis at x={x}"
        case (x, y):
            return f"Point at ({x}, {y})"

def handle_list(data):
    match data:
        case []:
            return "Empty list"
        case [x]:
            return f"Single item: {x}"
        case [x, y]:
            return f"Two items: {x}, {y}"
        case [x, *rest]:
            return f"Head: {x}, Tail: {rest}"

from dataclasses import dataclass

@dataclass
class Request:
    method: str
    path: str

def route(req):
    match req:
        case Request(method="GET", path="/"):
            return "Homepage"
        case Request(method="POST", path="/submit"):
            return "Form submission"
        case Request(method=method, path=path):
            return f"Unhandled {method} to {path}"

def classify_number(x):
    match x:
        case int() if x < 0:
            return "Negative integer"
        case int() if x == 0:
            return "Zero"
        case int() if x > 0:
            return "Positive integer"
        case _:
            return "Not an integer"