如numeric operator + - * / 正常用 ** 乘方 //求整除商 %求余数 C3 Conditionals 条件 1. if statement 1) Boolean Expression布尔表达式与Compare expression比较运算符 • 用比较运算符判断Ture/False • Compare expression比较运算符 </<=/>/>=/==等于/!=不等于 • 注意: =是赋值的意思 2)inde...
It is possible to include anifstatement inside anotherifstatement. For example, number =5# outer if statementifnumber >=0:# inner if statementifnumber ==0:print('Number is 0')# inner else statementelse:print('Number is positive')# outer else statementelse:print('Number is negative') Run...
因为它的 if 语法并不像其它语言是“语句(statement)”,而是一个“表达式(expression)”,这意味着你可以直接将 if 表达式赋值给变量: 代码语言:rust AI代码解释 // 若条件为真,得到 5,否则 6letnumber=ifcondition{5}else{6}; 这种语法形式足够简单明了,不就是将大家都熟悉的“if-else”直接用于赋值么,太...
In the following example, the “OR” operator is used along with the “if-statement” to compare two conditions. Multiple conditions are applied to the given data with the help of the “OR” operator. It will return “True” if either of the conditions is satisfied: Code: Number = 45 i...
If you don’t provide an explicit return statement when defining a function, then Python will automatically make the function return None. Even though all expressions are statements, not all statements are expressions. For example, pure assignment statements don’t return any value, as you’ll ...
a,b=(1,2)# leftofbinary operatorforx,yin((1,2),(3,4),(5,6)):# leftofbinary operatorprint(x,y)del a,b # rightofunary statement deff(x):returnx,x**2# rightofunary statement 1.2 命名的元组 命名的元组(namedtuple)与普通元组一样,有相同的表现特征,其添加的功能就是可以根据名称引用元...
Statement：编程语言中的基本命令或指令。Expression：在代码中评估的数学或逻辑运算。Operator：在代码中...
operator = input("Operation:") if(operator != "*" and "/" and "+" and "-" and "%"): { print("please enter a valid operation") } 在这里,即使我输入了一个有效的操作,它也会显示错误,请输入一个有效的操作[我打算只在人们在操作字段中输入"3","lol"时使用] ...
布尔变量最常见的用途之一是在if语句中。if语句通常采用以下形式:if(expression)statement1;或者if(expression)statement1;else statement2。 当在一个if语句的上下文被使用时,表达式有时被叫做条件或条件表达式。 在if语句的两种形式中,都会评估表达式的值。如果表达式的值是非零值,则语句1被执行;在第二种形式中,如果...
Python当中的判断语句非常简单,并且Python不支持switch,所以即使是多个条件,我们也只能罗列if-else。 # Let's just make a variable some_var = 5 # Here is an if statement. Indentation is significant in Python! # Convention is to use four spaces, not tabs. ...