odd or even

print ('enter your number which can be equally divided by 2')
num = int(input())
answer = num / int(2)
print (int(answer))

请问下为什么输入整数出来的答案结果有个小数啊？
例如input = 14
answer = 7.0

单斜杠是除法运算，结果返回浮点数。3/2=1.5 2/1=2.0
整除要用又斜杠，结果返回整数，同时有余数舍去 3//2 = 1 2//1=2