python中浮点数取整

1.向下取整
采用int强转即为向下取整

b = int(7.2) # 7
d = int(5.9) # 5

2.向上取整
math中的ceil函数

import math
print(math.ceil(4.1)) #5
print(math.ceil(4.9)) #5

3.四舍五入
round()函数

print(round(4.1)) #4
print(round(4.9)) #5