Python if语句 (Python if Statement) An if statement or an if block as it is commonly said, is useful to make decisions based on conditions in a program sometimes based on user input data. 如通常所说的if语句或if块,对于基于程序中的条件(有时基于用户输入数据)进行决策很有用。 An if block...
In our life we often encounters situation where we need to take decisions from among multiple conditions. In programming also, we can perform such multiple decision-making code using if-elif statements. In this chapter, we will learn about the elif statement in Python. Also, we will see how ...
if "王" in name and student[name] < 20: print("姓名:" + name+" " + "年龄:" + str(student[name])) else: pass 打印结果: "D:\Program Files\Python\Python37-32\python.exe" D:/demo/if_elif_else.py 姓名:王二 年龄:19 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. if判断条件中,如...
python3 3rd Oct 2021, 7:22 PM Aldrin S + 4 In addition to what Terel Scmitt said, can I point out another (unnecessary) thing. Since 0%2 and 0 are equal, and 0*2 is 0, the last statement is not needed. As well as this, since there are only odd and even numbers, the seco...
技术标签: Python python-3.x.我是初学者最初学者,我在'elif'之后获得了分号的语法错误消息,为什么是?另外,代码是否应该解决? #a - this program uses function valid(x) to determine if the user's input is a positive, non-zero number while imposing a limit of 3 attempts def valid(x): return ...
"D:\Program Files\Python\Python37-32\python.exe" D:/demo/if_elif_else.py 姓名:王二 年龄:19 if判断条件中,如果多个条件中只需要其中一个满足,则可用or 关联判断条件 #输入成绩在90分以上,或者成绩在60分以下的考生marks = {"张三": 95,"李四": 20,"王二": 88,"麻子": 91}fornameinmarks:ifmar...
, 每一种判断条件对应一组业务代码 条件语句的说明 对于首次if判断不满足后 , 其他条件的判断语句 用法 if bool_result : do elif bool_result: elifdo # 当前elif语句对应的语法块 elif bool_result: elifdo # 缩进等级与do语法块一致 else: elsedo 参数 elifdo : 当前elif语句对应的python代码 ...
As you can see in the above program, all we did was, we started by adding a condition to theifblock, and then used anotherif-elseblock in itselseblock. And we kept on doing the nesting until all the conditions were taken care of. This, however, is a little tedious than usingelif....
What if you also want your program to run a piece of code when your test expression is False? Or what if you want to include another test expression? Python has other keywords you can use to make more complex if statements, else and elif. When you use if, else, and elif in ...
Python Verschachtelte if-Anweisungen Wenn du eine if-Anweisung innerhalb einer anderen if-Anweisung hast, nennt man das in der Programmierwelt Verschachtelung. Es muss nicht immer eine einfache if-Anweisung sein, sondern du kannst das Konzept der if-, if-else- und sogar if-elif-else-Anweisun...