Python 3.10 | Match Statement - A More Flexible Switch

Also published on my personal blog (in Chinese). Python 3.10 | Match Statement - 更靈活的 switch Overview When I first started learning Python, I was surprised to find that there was no switch statement available. Fortunately, starting from Python 3.10, Python introduced its own version of switch—Structural Pattern Matching. So, what is Structural Pattern Matching? Compared to C++'s switch, I find it more similar to C#'s Pattern Matching. Here's a simple example: is_perform = False match ("anon", "soyorin"): # Mismatch case 'tomorin': print('組一輩子樂團') # Mismatch: soyorin != rana case ("anon", "rana"): print('有趣的女人') # Successful match, but guard fails case ("anon", "soyorin") if is_perform: print('為什麼要演奏春日影!') # Matches and binds y to "soyorin" case ("anon", y): print(f'愛音,{y} 強到靠北') # Pattern not attempted case _: print('我還是會繼續下去') # 愛音,soyorin 強到靠北

Mar 14, 2025 - 20:43

Python 3.10 | Match Statement - A More Flexible Switch

Also published on my personal blog (in Chinese).
Python 3.10 | Match Statement - 更靈活的 switch

Overview

When I first started learning Python, I was surprised to find that there was no switch statement available. Fortunately, starting from Python 3.10, Python introduced its own version of switch—Structural Pattern Matching.

So, what is Structural Pattern Matching? Compared to C++'s switch, I find it more similar to C#'s Pattern Matching.

Here's a simple example:

is_perform = False

match ("anon", "soyorin"):
    # Mismatch
    case 'tomorin':
        print('組一輩子樂團')

    # Mismatch: soyorin != rana
    case ("anon", "rana"):
        print('有趣的女人')

    # Successful match, but guard fails
    case  ("anon", "soyorin") if is_perform:
        print('為什麼要演奏春日影!')

    # Matches and binds y to "soyorin"
    case ("anon", y):
        print(f'愛音,{y} 強到靠北')

    # Pattern not attempted
    case _:
        print('我還是會繼續下去')


# 愛音,soyorin 強到靠北