Python match vs Traditional if-elif: A Modern Take on Switch Statements


In Python, the match keyword is used for pattern matching, introduced in Python 3.10 as part of structural pattern matching, similar to switch statements in other languages, but far more powerful.

Introduction

What is the match Keyword?

Starting from Python 3.10, the match statement introduces structural pattern matching. It acts like a powerful switch statement found in many other languages, but with far more expressive capabilities.

Basic Example Using match

def handle(value):  
    match value:  
        case 1:  
            print("One")  
        case 2:  
            print("Two")  
        case _:  
            print("Something else")

This works similarly to a switch-case statement in C or JavaScript, but allows for much more than constant matching.

Traditional Approach: ifelifelse

Before Python 3.10, the typical way to implement branching logic was using ifelif chains:

def handle(value):  
    if value == 1:  
        print("One")  
    elif value == 2:  
        print("Two")  
    else:  
        print("Something else")

This is still valid and widely used, especially for simple branching logic.

Using dict for Function Dispatch

Another common Pythonic trick is to use a dictionary to map values to handler functions:

def handle_one():  
    print("One")  
  
def handle_two():  
    print("Two")  
  
def handle_default():  
    print("Default")  
  
handlers = {  
    1: handle_one,  
    2: handle_two  
}  
  
value = 2  
handlers.get(value, handle_default)()

This approach avoids multiple ifelif branches and allows dynamic behavior.

Advanced match Patterns

Matching Tuples

point = (0, 1)  
  
match point:  
    case (0, 0):  
        print("Origin")  
    case (0, y):  
        print(f"Y={y}")  
    case (x, 0):  
        print(f"X={x}")  
    case (x, y):  
        print(f"X={x}, Y={y}")

Matching Classes

class Point:  
    def __init__(self, x, y):  
        self.x = x  
        self.y = y  
  
p = Point(1, 2)  
  
match p:  
    case Point(x=0, y=0):  
        print("Origin")  
    case Point(x, y):  
        print(f"Point at ({x}, {y})")

Using Wildcard _

The underscore (_) is used as a wildcard to match anything, similar to default in a switch statement:

match x:  
    case "a":  
        print("Matched a")  
    case _:  
        print("Default case")

Comparison Table

Approach Python Version Use Case Complex Matching
ifelifelse All Simple logic No
dict dispatch All Function-based handling Limited
match 3.10+ Advanced pattern matching Yes

Summary

  • match provides clean and powerful pattern matching in Python 3.10+
  • ifelifelse remains universal and straightforward
  • dict dispatching is useful for clean function routing
  1. Use ifelif for compatibility and simplicity.
  2. Use dict if you’re dispatching functions by value.
  3. Use match when working in Python 3.10+ and need readable, powerful pattern matching.

Python

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