Thenotkeyword is a logical operator, and is used to reverse the result of the conditional statement: Example Test ifais NOT greater thanb: a =33 b =200 ifnot a > b: print("a is NOT greater than b") Try it Yourself » Nested If ...
The Not Equal operator (!=) in python is used to check if two values are not equal. If they are not equal, True is returned, otherwise False is returned. We can use this operator in conditional statements, and looping statements like for, while loop etc. We can also use this operator...
elif(else if的缩写)允许你检查多个表达式是否为真,并在前一个条件为假时执行特定代码块。 x=10ifx>15:print("x is greater than 15")elifx>10:print("x is greater than 10 but less than or equal to 15")else:print("x is 10 or less") 在这个例子中,因为x大于 10 但不大于 15,所以第二个...
有时有超过两个可能的情况,于是我们需要多于两个的分支。 表示像这样的计算的方法之一是链式条件(chained conditional): if x < y: print('x is less than y') elif x > y: print('x is greater than y') else: print('x and y are equal') 1. 2. 3. 4. 5. 6. elif 是“else if”的缩写。
assertconditional_expression,message 這裡,message是一個字串,當conditional_expression評估為False並且發生AssertionError時列印。我們可以在下面看到這一點。 num1=10num2=5num3=10print("This statement will get printed")assertnum1==num3,"{} is not equal to {}".format(num1,num2)print("This statement...
3 chapter conditional-statements Comparison Operation(Boolean expression)Python Meaning < less than <= less than or Equal to == Equal to >= Greater than or Equal to > Greater than != Not Equal then return true or false In python the spacing does matter!we indicate when it is that we wan...
Assert An assert statement, such as assert a == b, "A is not equal to b" Assert_ INTERNAL: See the class Assert for further information.Assign A statement that includes a binding (except imports) AssignExpr An assignment expression, such as x := y AssignExpr_ INTERNAL: See the ...
Understand Python if-else statements easily with this comprehensive guide. Discover how to use conditional logic to control the flow of your programs.
if (true) // true is our conditional expression std::cout << "The condition is true" << std::endl; else std::cout << "The condition is false" << std::endl; 注意:if 和 else 后面都没有分号。 以下程序的作用相似: bool b ( false ) ; ...
我们已经在上文求奇偶性的函数定义例子中见过条件控制语句(conditional statement)了,再来看一个例子: defcompare(x,y):ifx<y:print(x,"is less than",y)elifx>y:print(x,"is greater than",y)else:print(x,"and",y,"are equal") 这是个比较两个输入值(不一定是数字)的函数。比较两个值(x & y)...