If encoding="utf8" is not specified (also) when a file is opened, it can cause Unicode Decode Errors ("'charmap' codec can't decode byte 0x90 in position n: character maps to undefined") when the software is run in Windows (e.g. running test.04_oci).
If encoding="utf8" is not specified (also) when a file is opened, it can cause Unicode Decode Errors ("'charmap' codec can't decode byte 0x90 in position n: character maps to undefined") when the software is run in Windows (e.g. running test.04_oci).