条件循环

a = 9
if  a>5:
    print("你猜错了")
else:
    print("你猜对了")

print("你猜对了") if a>5 else print("你猜错了")
print("你猜对了" if a > 5 else "你猜错了")
tong = "你猜对了" if a > 5 else "你猜错了"
print(tong)

#自增量
a = 1
#循环条件
while a<5:
    print("我是童谣%s"%a)
    #自增
    a +=1

print('程序已结束')

计算1-100 的和。高斯求和

1+2+3+4+5+6.....+100

#自增量
count = 1
#使用一个变量对结果进行保存
sum = 0
#循环条件
while count<=100:
    sum = sum + count
    print(count,sum)
    自增
    count +=1

嵌套循环

i = 0
while i<5:
    print(f'+++{i}')
    j = 0
    while j < 5:
        print(f'---{j}')
        j += 1
    i+=1

外层循环执行一次，内层循环执行5次

i = 0
while i <= 10:

    if i ==3:
        i += 1

        continue
        break
    print(i)
    i += 1


i = 0
while i <= 10:
    if i != 3:
        print(i)
    i += 1