New submission from Ma Lin <[email protected]>:
If run this code, it will raise an exception:
import pickle
import lzma
import pandas as pd
with lzma.open("test.xz", "wb") as file:
pickle.dump(pd.DataFrame(range(1_000_000)), file, protocol=5)
The exception:
Traceback (most recent call last):
File "E:\testlen.py", line 7, in <module>
pickle.dump(pd.DataFrame(range(1_000_000)), file, protocol=5)
File "D:\Python39\lib\lzma.py", line 234, in write
self._pos += len(data)
TypeError: object of type 'pickle.PickleBuffer' has no len()
The exception is raised in lzma.LZMAFile.write() method:
https://github.com/python/cpython/blob/v3.10.0b2/Lib/lzma.py#L238
PickleBuffer doesn't have .__len__ method, is it intended?
----------
messages: 395971
nosy: malin, pitrou
priority: normal
severity: normal
status: open
title: PickleBuffer doesn't have __len__ method
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Python tracker <[email protected]>
<https://bugs.python.org/issue44439>
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