Python 3.10.12 (main, Jul 5 2023, 18:54:27) [GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from choldate import cholupdate, choldowndate
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/rayuser/choldate/choldate/__init__.py", line 3, in <module>
from ._choldate import cholupdate, choldowndate
ModuleNotFoundError: No module named 'choldate._choldate'