[issue12022] AttributeError should report the same details when raised by lookup_special() as when raised in the REPL

[Daniel Holth]

Daniel Holth <dholth at fastmail.fm> added the comment:

Python should explain AttributeError in the same way when it's raised by the interpreter. The with: statement below should raise the second AttributeError, not the first.

import transaction
with transaction: pass
>>> AttributeError: __exit__

import sys
sys.__exit__
>>> AttributeError: 'module' object has no attribute '__exit__'

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title: improve special method lookup error message -> AttributeError should report the same details when raised by lookup_special() as when raised in the REPL

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12022>
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