New submission from David Parks <[email protected]>:
Below is a minimum reproducible test case of what appears to be an issue in
pickle.
Before pickling the exception ClientConnectionError, from aiohttp, the property
ClientConnectionError._os_error is a PermissionError object (a subclass of
OSError). After deserialization ClientConnectionError._os_error appears to be a
string based on the exception that is produced.
I'm not familiar enough with pickle to make much headway here.
```
import aiohttp
import pickle
connection_key = aiohttp.client_reqrep.ConnectionKey
ose = OSError(1, 'unittest')
cce = aiohttp.client_exceptions.ClientConnectorError(connection_key, ose)
cce_pickled = pickle.dumps(cce)
pickle.loads(cce_pickled)
```
```
Traceback (most recent call last):
File "/opt/.pycharm_helpers/pydev/pydevd.py", line 1758, in <module>
main()
File "/opt/.pycharm_helpers/pydev/pydevd.py", line 1752, in main
globals = debugger.run(setup['file'], None, None, is_module)
File "/opt/.pycharm_helpers/pydev/pydevd.py", line 1147, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "/opt/.pycharm_helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18,
in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "/project_neural_mouse/src/ARCHIVE/scratch/scratch_13.py", line 11, in
<module>
File "/usr/local/lib/python3.6/dist-packages/aiohttp/client_exceptions.py",
line 133, in __init__
super().__init__(os_error.errno, os_error.strerror)
AttributeError: 'str' object has no attribute 'errno'
```
----------
components: Library (Lib)
messages: 352985
nosy: davidparks21
priority: normal
severity: normal
status: open
title: Pickle not deserializing an OSError exception as expected
type: crash
versions: Python 3.6
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Python tracker <[email protected]>
<https://bugs.python.org/issue38254>
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