小时和时间转换为特定格式

Hours and time converting to a certain format

我一直在尝试将以下时间格式8.25 (fractional hours)更改为8.15 meaning 8:15。并且 17.7517.45 meaning 17:45。问题是我特别需要带有点 . 而不是 :.

的格式 (timedelta) e.g 17.45

鉴于您的格式字符串 HH.MM,您可以按如下方式处理它:

my_time = "17.75"
hours, minutes = my_time.split(".")  # (17, 75)
minutes_converted = round(float(minutes) / 100 * 60)  # 45
my_time_converted = "{}.{}".format(hours, minutes_converted)  #17.45
print(my_time_converted)

> 17.45

这可以通过使用适当的小数小时表示形式方便地完成,即 timedelta。如果输入数据类型为string,先转换为float。

例如:

from datetime import datetime, timedelta

for td in [8.25, 17.75]:
    # add the duration as timedelta to an arbitrary date to get a time object:
    print((datetime(2020,1,1) + timedelta(hours=td)).time())
08:15:00
17:45:00

使用pandas,看起来像

import pandas as pd

s = pd.Series([8.25, 17.75])

refDate = '2020-01-01' # need a date..

t = pd.Timestamp(refDate) + pd.to_timedelta(s, unit='h')

print(t)

# 0   2020-01-01 08:15:00
# 1   2020-01-01 17:45:00
# dtype: datetime64[ns]

print(t.dt.time)

# 0    08:15:00
# 1    17:45:00
# dtype: object