介绍

  • MicroPython 不支持

match case

  1. flag = False
  2. match (100, 200):
  3.    case (100, 300):  # Mismatch: 200 != 300
  4.        print('Case 1')
  5.    case (100, 200) if flag:  # Successful match, but guard fails
  6.        print('Case 2')
  7.    case (100, y):  # Matches and binds y to 200
  8.        print(f'Case 3, y: {y}')
  9.    case _:  # Pattern not attempted
  10.        print('Case 4, I match anything!')

方式二

  1. def switch_case(value):
  2.     switcher = {
  3.         0: "zero",
  4.         1: "one",
  5.         2: "two",
  6.     }
  8.     return switcher.get(value, 'wrong value')
  • 使用匿名函数方式实现：
  1. def foo(var,x):
  2.     return {
  3.             'a': lambda x: x+1,
  4.             'b': lambda x: x+2,
  5.             'c': lambda x: x+3,    
  6.     }[var](x)