倒三角
num2 = int(input("Line:"))
while num2 > 0:
num1 = num2
while num1 > 0:
print("*",end="")
num1 -=1
print()
num2 -= 1
九九乘法表
first = 1
while first <= 9:
second = 1
while second <= first:
print(str(second)+"*"+str(first)+"="+str(int(second)*int(first)),end="\t")
second +=1
print()
first +=1