如何优化这样的代码？ [关闭]答案

【问题标题】：How to optimize such code? [closed]如何优化这样的代码？ [关闭]
【发布时间】：2017-11-17 16:41:26
【问题描述】：

我们有一个360度的风向，有一定的步长，如何优化这段代码？

if 348.75 <= data['wind_deg'] <= 360 or 0 < data['wind_deg'] < 11.25:
    print("wind: N")

if 11.25 <= data['wind_deg'] <= 33.75:
    print("wind: N-N-E")

if 33.75 <= data['wind_deg'] <= 56.25:
    print("wind: N-E")

if 56.25 <= data['wind_deg'] <= 78.75:
    print("wind: E-N-E")

if 78.75 <= data['wind_deg'] <= 101.25:
    print("wind: E")

if 101.25 <= data['wind_deg'] <= 123.75:
    print("wind: E-S-E")

if 123.75 <= data['wind_deg'] <= 146.25:
    print("wind: S-E")

if 146.25 <= data['wind_deg'] <= 168.75:
    print("wind: S-S-E")

if 168.75 <= data['wind_deg'] <= 191.25:
    print("wind: S")

if 191.25 <= data['wind_deg'] <= 213.75:
    print("wind: S-S-W")

if 213.75 <= data['wind_deg'] <= 236.25:
    print("wind: S-W")

if 236.25 <= data['wind_deg'] <= 258.75:
    print("wind: W-S-W")

if 258.75 <= data['wind_deg'] <= 281.25:
    print("wind: W")

if 281.25 <= data['wind_deg'] <= 303.75:
    print("wind: W-N-W")

if 303.75 <= data['wind_deg'] <= 326.25:
    print("wind: N-W")

if 326.25 <= data['wind_deg'] <= 348.75:
    print("wind: N-N-W")

我想我需要使用类似的东西：

风 = ['N','NE','ENE','E','ESE','S-E','S','SSW','SW','W','WNW ','NW','NNW']

参考度数，但不知道如何正确做

【问题讨论】：

你可能会喜欢codereview.stackexchange.com
我投票结束这个问题，因为它属于codereview.stackexchange.com
根据什么标准优化？

标签： python arrays if-statement optimization range

【解决方案1】：

这是一个选项：

wind = ['N', 'NNE','NE','ENE','E','ESE','SE', 'SSE',
        'S', 'SSW', 'SW','WSW', 'W','WNW','NW','NNW']
delta_phi = 22.5

# this is where the directions are centered
degs = [delta_phi*d for d in range(0, len(wind))]

def get_dir(d):
    d += delta_phi/2
    d %= 360
    index = int(d/delta_phi)
    return wind[index]

或更紧凑：

def get_dir(d):
    index = int(((d+delta_phi/2) % 360)/delta_phi)
    return wind[index]

未经彻底测试；刚刚进行了这个测试：

for i in range(361):
    print(i, get_dir(i))

【讨论】：