python学习20200509while循环语句

Posted 2020-12-15 wangyunpeng888888

while循环语句

 

age = 50
guss_age = int(input("请输入您猜测的年龄:"))
while guss_age !=age:
    if guss_age > age:
        print("您猜大了：请重试！")
    else:
        print("您猜小了：请重试！")
    guss_age = int(input("请输入您猜测的年龄:"))

print("您猜对了！")

 

while 条件：

　　.....

else:                #只有while语句里有break，else 语句才不会执行

　　.....

 

break  终止

 

num =0
while  num <10:
    print(num)
    num = num +1
   
    break

 

continue跳出当次循环，继续从头开始

num = 1
while num <=10:
   

    num = num +1
    if num == 3:
        continue
    print(num)

 

结果：

2
4
5
6
7
8
9
10
11

 

 

三行语句不换行

print("hallo word")

print("hallo word")

print("hallo word")

 

print("hallo word",end ="___")

print("hallo word",end ="___")

print("hallo word",end ="___")

 

num1 = 0
num2 = 0
while num1<=5:
    print(num1,end="_")
    num2 = 0
    while num2 <=7:
        print(num2,end="-")
        num2+=1
    num1+=1
    print(end = " ")    #等价于print()

 

结果：

0_0-1-2-3-4-5-6-7-
1_0-1-2-3-4-5-6-7-
2_0-1-2-3-4-5-6-7-
3_0-1-2-3-4-5-6-7-
4_0-1-2-3-4-5-6-7-
5_0-1-2-3-4-5-6-7-