def say_hello():
    print("hello 1")
    print("hello 2")
    print("hello 3")


say_hello()


def sum_num():
    num1 = 10
    num2 = 10
    sum = num1 + num2
    print("%d + %d = %d" % (num1, num2, sum))


sum_num()


def sum2_num(n1, n2):
    print("%d + %d = %d" % (n1, n2, n1 + n2))


sum2_num(10, 20)


def sum3_num(n1, n2):
    return n1 + n2


result = sum3_num(10, 20)
print("计算结果是%d" % (result))


#乘法表
def multiple_table():
    row = 1
    while row <= 9:
        col = 1
        while col <= row:
            print("%d * %d = %d" % (col, row, row * col), end="\t")
            col += 1
        print("")
        row += 1


multiple_table()


#for循环实现
def mulfor():
    for i in range(1,10):      
        for j in range(1,i+1): 
             print("%d * %d = %d" % (j,i,j*i),end="\t")
        print()
        

mulfor()