I am using cftime 1.5.1.1 in python 3.8.10 on ubuntu 20.04.

I am trying to change the unit in cftime.date2num from "days since 0001-12-31" to "seconds since 1970-01-01"

The error I am encountering is;

Traceback (most recent call last):
File "/home/egoss/Documents/data_processing/mita-teknik/main.py", line 136, in
daily_dataframe = Txt.input_txt(day[0][1], zipObj)
File "/home/egoss/Documents/data_processing/mita-teknik/Txt_folder.py", line 229, in input_txt
df[set_header[0]] = cftime.date2num(df[set_header[0]], "seconds since 1970-01-01 00:00:00.000", calendar="standard")
File "src/cftime/_cftime.pyx", line 270, in cftime._cftime.date2num
File "/home/egoss/.local/lib/python3.8/site-packages/pendulum/period.py", line 340, in mod
return self.as_interval().mod(other)
File "/home/egoss/.local/lib/python3.8/site-packages/pendulum/duration.py", line 403, in mod
r = self._to_microseconds() % other._to_microseconds()
AttributeError: 'datetime.timedelta' object has no attribute '_to_microseconds'

I have noticed that line 229 does not have any issues if I use a date up to and including 1582-10-15 (the date of the gregorian calendar change.) Any date after this does not work.

Thank you!