STINNER Victor added the comment:
"This patch introduces a bit ugly traceback. Shouldn't there be “raise from
None” or “raise from previous_exc” instead of simple raise?"
Oh, I see.
>>> os.environb[b'10']
Traceback (most recent call last):
File "/home/vstinner/prog/python/default/Lib/os.py", line 648, in __getitem__
value = self._data[self.encodekey(key)]
KeyError: b'10'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/vstinner/prog/python/default/Lib/os.py", line 651, in __getitem__
raise KeyError(key)
KeyError: b'10'
Attached patch adds "from None".
----------
resolution: fixed ->
status: closed -> open
Added file: http://bugs.python.org/file31441/os_environb_raise_from_none.patch
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<http://bugs.python.org/issue17702>
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