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Bug: can't pickle custom class in PtIPython on Windows 11 #602
Description
I have never been able to pickle custom classes in PtIPython on Windows.
Minimal reproducible example:
import pickle
from collections import namedtuple
Unicode_Point = namedtuple(
"Unicode_Point",
(
"Code_Point",
"Name",
"Script",
"Category",
"Combining",
"Bidi",
"Decomposition",
"Numeric",
"Idib",
"Upper",
"Lower",
"Title",
),
)
pickle.dumps(Unicode_Point(Code_Point=926, Name='GREEK CAPITAL LETTER XI', Script='Greek', Category='Lu', Combining='0', Bidi='L', Decomposition='', Numeric=None, Idib='N', Upper=None, Lower=958, Title=None))
On Windows 11, the above code runs fine on both CPython 3.12.6 and IPython 8.27.0 (on CPython 3.12.6) and generates the following:
b'\x80\x04\x95b\x00\x00\x00\x00\x00\x00\x00\x8c\x08__main__\x94\x8c\rUnicode_Point\x94\x93\x94(M\x9e\x03\x8c\x17GREEK CAPITAL LETTER XI\x94\x8c\x05Greek\x94\x8c\x02Lu\x94\x8c\x010\x94\x8c\x01L\x94\x8c\x00\x94N\x8c\x01N\x94NM\xbe\x03Nt\x94\x81\x94.'
But on PtIPython 1.0.1 PtPython 3.0.29 with the same IPython environment, the following error is raised instead:
PicklingError: Can't pickle <class '__main__.Unicode_Point'>: attribute lookup Unicode_Point on __main__ failed
Please fix this.
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