Pandas Module Failing to Load

Rhino.Inside CPython
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1

I have several scripts that use the pandas module that have been working fine in Rhino 8 thus far. I recently updated to 8.31.26126.13431 and started getting the locale error for “en-US”. I applied the fix as described in previous posts but am now getting a new error. My import snippet and error are here:

# r: pandas, numpy, openpyxl




import os

from inspect import getsourcefile

from os.path import abspath

import datetime

import scriptcontext

import rhinoscriptsyntax as rs

import locale

locale.setlocale(locale.LC_ALL,'en_US.UTF-8')




import pandas as pd

import numpy

AttributeError: partially initialized module 'pandas' has no attribute '_pandas_datetime_CAPI' (most likely due to a circular import)
2

You may want to look at this solution on this and some recent changes: Error in Rhino 8 SR31 when using pandas: unknown locale: en-US [7:1] - #18 by eirannejad

The fix in Ehsan’s fix_locale.py module, posted in the thread (Error in Rhino 8 SR31 when using pandas: unknown locale: en-US [7:1], post #18). It both corrects the BCP-47→POSIX name and overrides locale.getlocale so it won’t throw. Put it on the Python search path and import it before pandas:

python

import fix_locale
import pandas

Note: an important detail is that just adding the setlocale line to their already-crashed session won’t help — pandas is cached broken. They need to reset the Python runtime (or restart Rhino) and ensure the locale is fixed before the very first pandas import, ideally via fix_locale.py or a ScriptEditor startup command.