pd.to_datetime 格式参数被拒绝

Question

我无法理解这个异常：

date = '01/01 24:00:00'
pd.to_datetime(date, format = '%m/%d %H:%M:%S')

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
~\Anaconda3\envs\tf2\lib\site-packages\pandas\core\tools\datetimes.py in _convert_listlike_datetimes(arg, format, name, tz, unit, errors, infer_datetime_format, dayfirst, yearfirst, exact)
    431             try:
--> 432                 values, tz = conversion.datetime_to_datetime64(arg)
    433                 return DatetimeIndex._simple_new(values, name=name, tz=tz)

pandas\_libs\tslibs\conversion.pyx in pandas._libs.tslibs.conversion.datetime_to_datetime64()

TypeError: Unrecognized value type: <class 'str'>

During handling of the above exception, another exception occurred:

ValueError                                Traceback (most recent call last)
<ipython-input-30-1c006106355f> in <module>
----> 1 pd.to_datetime(date, format = '%m/%d %H:%M:%S')

~\Anaconda3\envs\tf2\lib\site-packages\pandas\core\tools\datetimes.py in to_datetime(arg, errors, dayfirst, yearfirst, utc, format, exact, unit, infer_datetime_format, origin, cache)
    754             result = convert_listlike(arg, format)
    755     else:
--> 756         result = convert_listlike(np.array([arg]), format)[0]
    757 
    758     return result

~\Anaconda3\envs\tf2\lib\site-packages\pandas\core\tools\datetimes.py in _convert_listlike_datetimes(arg, format, name, tz, unit, errors, infer_datetime_format, dayfirst, yearfirst, exact)
    433                 return DatetimeIndex._simple_new(values, name=name, tz=tz)
    434             except (ValueError, TypeError):
--> 435                 raise e
    436 
    437     if result is None:

~\Anaconda3\envs\tf2\lib\site-packages\pandas\core\tools\datetimes.py in _convert_listlike_datetimes(arg, format, name, tz, unit, errors, infer_datetime_format, dayfirst, yearfirst, exact)
    398                 try:
    399                     result, timezones = array_strptime(
--> 400                         arg, format, exact=exact, errors=errors
    401                     )
    402                     if "%Z" in format or "%z" in format:

pandas\_libs\tslibs\strptime.pyx in pandas._libs.tslibs.strptime.array_strptime()

ValueError: time data '01/01 24:00:00' does not match format '%m/%d %H:%M:%S' (match)

我该如何补救代码？

Answer 1

简答：24 小时无效。

小时数应在 0-23 范围内，如 %H 格式指令的 datetime 包中所指定：

%H Hour (24-hour clock) as a zero-padded decimal number. <b>00, 01, …, 23</b>

所以 24 不在那个范围内。如果时钟设置为01/01 24:00:00，那么这是01/02 00:00:00。

pd.to_datetime 格式参数被拒绝

pd.to_datetime format argument is rejected

format

strftime

python-3.x

string-to-datetime

pandas