python典型案例:打印输出九九乘法表
for x in range(1,10):'''外循环控制行数'''
for y in range(1,x+1):'''内循环控制列'''
print(x,"*",y,"=",x*y,"",end="")'''end表示""为结束符'''
print("")
n=1
while(n<=9):'''控制行'''
m=1'''让m进入外循环值变1;'''
while(m<=n):'''控制列'''
print(n,"*",m,"=",n*m,"",end="")
m+=1
print("")
n+=1
菜鸟教程大佬勿喷!!!