# Python - 将数字四舍五入到最接近的整数

``````32.268907563;
32.268907563;
31.2396694215;
33.6206896552;
...
``````

Code:

``````for i in widthRange:
for j in heightRange:
r, g, b = rgb_im.getpixel((i, j))
h, s, v = colorsys.rgb_to_hsv(r/255.0, g/255.0, b/255.0)
h = h * 360
int(round(h))
print(h)
``````

## 推荐答案

TL;DR:

``````round(x)
``````

``````h = round(h)
``````

``````def proper_round(num, dec=0):
num = str(num)[:str(num).index('.')+dec+2]
if num[-1]>='5':
return float(num[:-2-(not dec)]+str(int(num[-2-(not dec)])+1))
return float(num[:-1])
``````

``````>>> print(proper_round(1.0005,3))
1.001
>>> print(proper_round(2.0005,3))
2.001
>>> print(proper_round(3.0005,3))
3.001
>>> print(proper_round(4.0005,3))
4.001
>>> print(proper_round(5.0005,3))
5.001
>>> print(proper_round(1.005,2))
1.01
>>> print(proper_round(2.005,2))
2.01
>>> print(proper_round(3.005,2))
3.01
>>> print(proper_round(4.005,2))
4.01
>>> print(proper_round(5.005,2))
5.01
>>> print(proper_round(1.05,1))
1.1
>>> print(proper_round(2.05,1))
2.1
>>> print(proper_round(3.05,1))
3.1
>>> print(proper_round(4.05,1))
4.1
>>> print(proper_round(5.05,1))
5.1
>>> print(proper_round(1.5))
2.0
>>> print(proper_round(2.5))
3.0
>>> print(proper_round(3.5))
4.0
>>> print(proper_round(4.5))
5.0
>>> print(proper_round(5.5))
6.0
>>>
>>> print(proper_round(1.000499999999,3))
1.0
>>> print(proper_round(2.000499999999,3))
2.0
>>> print(proper_round(3.000499999999,3))
3.0
>>> print(proper_round(4.000499999999,3))
4.0
>>> print(proper_round(5.000499999999,3))
5.0
>>> print(proper_round(1.00499999999,2))
1.0
>>> print(proper_round(2.00499999999,2))
2.0
>>> print(proper_round(3.00499999999,2))
3.0
>>> print(proper_round(4.00499999999,2))
4.0
>>> print(proper_round(5.00499999999,2))
5.0
>>> print(proper_round(1.0499999999,1))
1.0
>>> print(proper_round(2.0499999999,1))
2.0
>>> print(proper_round(3.0499999999,1))
3.0
>>> print(proper_round(4.0499999999,1))
4.0
>>> print(proper_round(5.0499999999,1))
5.0
>>> print(proper_round(1.499999999))
1.0
>>> print(proper_round(2.499999999))
2.0
>>> print(proper_round(3.499999999))
3.0
>>> print(proper_round(4.499999999))
4.0
>>> print(proper_round(5.499999999))
5.0
``````

``````# Having proper_round defined as previously stated
h = int(proper_round(h))
``````

``````>>> proper_round(6.39764125, 2)
6.31 # should be 6.4
>>> proper_round(6.9764125, 1)
6.1  # should be 7
``````

``````def proper_round(num, dec=0):
num = str(num)[:str(num).index('.')+dec+2]
if num[-1]>='5':
a = num[:-2-(not dec)]       # integer part
b = int(num[-2-(not dec)])+1 # decimal part
return float(a)+b**(-dec+1) if a and b == 10 else float(a+str(b))
return float(num[:-1])
``````