可以将每个条件映射到一个函数,然后通过调用函数来实现 switch/case 的功能: python复制代码 def switch_case_example(value): def case_1(): return "Case 1 executed" def case_2(): return "Case 2 executed" def case_3(): return "Case 3 executed" def default_case(): return "Default case exec...
在Python中,虽然没有原生的switch-case语句(像许多其他编程语言那样),但我们可以通过多种方式实现类似的功能。以下是几种常见的方法: 1. 使用字典映射函数 这是最常见和推荐的方式之一,因为它简洁且易于阅读。 def switch_example(value): switcher = { 'a': "Apple", 'b': "Banana", 'c': "Cherry", ...
"# As suggested by Pierre Quentel, you can even expand upon the# functionality of the classic 'case' statement by matching multiple# cases in a single shot. This greatly benefits operations such as the# uppercase/lowercase example above:importstring c ='A'forcaseinswitch(c):ifcase(*string....
# uppercase/lowercase example above: import string c = 'A' for case in switch(c): if case(*string.lowercase): # note the * for unpacking as arguments print "c is lowercase!" break if case(*string.uppercase): print "c is uppercase!" break if case('!', '?', '.'): # normal...
Erforsche Pythons match-case: eine Anleitung zu seiner Syntax, Anwendungen in Data Science und ML sowie eine vergleichende Analyse mit dem traditionellen switch-case.
学习Python过程中，发现没有switch-case,过去写C习惯用Switch/Case语句，官方文档说通过if-elif实现。所以不妨自己来实现Switch/Case功能。方法一 通过字典实现 def foo(var):return { 'a': 1，'b': 2,'c': 3,}.get(var,'error') #'error'为默认返回值，可自设置 方法二 通过匿名函数实...
如今，随着 Python 3.10 beta 版的发布，终于将 switch-case 语句纳入其中。带圆括号的上下文管理器：现在支持在上下文管理器中跨多行使用括号进行延续。也可以在所包含组的末尾使用逗号。with ( CtxManager1() as example1, CtxManager2() as example2, CtxManager3() as example3,): ...错...
1. Python Switch Case Implementation using Dictionary We can create adictionarywhere the key will be the case and the value will be the result. We will call the dictionary get() method with a default value to implement the scenario when there is no matching case. ...
publicclassSwitchExample{publicstaticvoidmain(String[]args){intcaseNum=1;switch(caseNum){case1:System.out.println("这是案例一");break;case2:System.out.println("这是案例二");break;default:System.out.println("这是默认案例");break;}}} ...
# The following example is pretty much the exact use-case of a dictionary, # but is included for its simplicity. Note that you can include statements # in each suite. v='ten' forcaseinswitch(v): ifcase('one'): print1 break