BUG: astype of datetimelike to non-NS · Issue #19223 · pandas-dev/pandas (original) (raw)

The current pandas master includes a behaviour change date conversion.

Before #19176

In [1]: import pandas as pd

In [2]: pd.DataFrame({'x': [3, 2, 1]}).astype('M8[us]')
Out[2]:
                           x
0 1970-01-01 00:00:00.000003
1 1970-01-01 00:00:00.000002
2 1970-01-01 00:00:00.000001

After #19176

In [1]: import pandas as pd

In [2]: pd.DataFrame({'x': [3, 2, 1]}).astype('M8[us]')
Out[2]:
                              x
0 1970-01-01 00:00:00.000000003
1 1970-01-01 00:00:00.000000002
2 1970-01-01 00:00:00.000000001