<case1 statements> elif<condition2>: <case2 statements> elif<condition3>: <case3 statements> ... else: <default statements> 该语句是顺序评估每个条件,如果当前条件分支为True,则执行对应分支下的语句块,如果没有任何条件成立,则执行else中的语句块,其中else是可以省略的。代码如下: num = input("please...
print "c is uppercase!" break if case(): # default print "I dunno what c was!" # 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...
switch(expression){ case value1: // 语句 break; // 可选 case value2: // 语句 break; // 可选 default: // 可选 // 语句}使用流程图来表示，大概是这样的：它的用法不难理解：switch 语句的值满足哪一个 case 情况，就会执行对应的代码块，执行时遇到 break 就跳出，否则...
Python Switch Case FAQs What happens if two cases match the same input in a match-case statement? Python evaluates cases in the order they appear. The first matching case is executed, and the match block exits immediately. Can match-case be used with custom classes or objects?
default:/*可选的*/ statement(s); } “` 在switch语句中,expression是一个常量表达式,必须是一个整型或枚举类型。在一个switch中可以有任意数量的case语句。每个case后跟一个要比较的值和一个冒号。case的constant-expression必须与switch中的变量具有相同的数据类型,且必须是一个常量或字面量。当被测试的变量等于...
Switch Statement in Python The switch can be defined as a control mechanism that is used to test the value stored in a variable and to execute the corresponding case statements. The function of the switch case statement is to introduce control flow in the program and to ensure that code is...
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2、match..case语句 3)循环结构 1、while语句 2、for语句 4)break 和 continue 语句 1、break 语句 2、continue 语句 一、概述 Python 是一个高层次的结合了解释性、编译性、互动性和面向对象的解释性编程语言。其实python的基础语法跟其它编程语言都非常类似,只是写法有些不一样而已。
If the condition in the assert statement is false, an AssertionError will be raised: 代码语言:javascript 复制 a=[]print(avg_value(a))AssertionError:No values The assert is pretty useful to find bugs in the code. Thus, they can be used to support testing. ...
默认参数 (default argument) 可变参数 (variable argument) 关键字参数 (keyword argument) 命名关键字参数 (name keyword argument) 参数组合 每种参数形态都有自己对应的应用,接下来用定义一个金融产品为例来说明各种参数形态的具体用法。 先从最简单的「位置参数」开始介绍: ...