if statement

def max_num(num1,num2,num3):    print('this is max_num1')    return(max(num1,num2,num3))print(max_num(2,3,108))def max_num(num1,num2,num3):    print('this is max num2')    if num1>=num2 and num1>=num3:        return num1    elif num2>=num1 and num2>=num3:        return num2    else:        return num3print(max_num(2,111,111111))

进阶计算机(可加减乘除运算)

num1 = float(input("请输入第一个数字: "))op = input("请输入运算符号: ")num2 = float(input("请输入第二个数字: "))if op=="+":    print(num1+num2)elif op=="-":    print(num1-num2)elif op=="*":    print(num1*num2)elif op=="/":    print(num1/num2)else:    priint("不支援的运算")