1.输出数，分别打印个、十、百、千、万

n = t = m = int(input('>>')) #定义变量

i = 1while n >= 10: # 计算数字位数n = n / 10i += 1

while i > 0: #分别打印位数

i -= 1print(t // (10 i))

t = t % (10 i) 

2.9*9乘法表

for i in range(1,10):

print('')for j in range(1,i+1):sum = j i

print(j,'',i,'=',sum,end='\t') 

3.输入成绩，90以上A，80~90B，70~80C，60~70D，60以下E

corse = int(input('>>'))

if corse >= 80:if corse > 90:print('A')else:print('B')else:if corse >= 70:print('C')elif corse >= 60:print('D')else:print('E')