熊猫：减去两个日期列，结果为整数

您可以将的列

dtype

timedelta

np.timedelta64(1,'D')

int

float

NaN

df_test['Difference'] = df_test['Difference'] / np.timedelta64(1, 'D')print (df_test)  First_Date Second Date  Difference0 2016-02-09  2015-11-19        82.01 2016-01-06  2015-11-30        37.02        NaT  2015-12-04         NaN3 2016-01-06  2015-12-08        29.04        NaT  2015-12-09         NaN5 2016-01-07  2015-12-11        27.06        NaT  2015-12-12         NaN7        NaT  2015-12-14         NaN8 2016-01-06  2015-12-14        23.09        NaT  2015-12-15         NaN

变频器。