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traceback incorrect with contextlib.contextmanager #736

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slozier opened this issue Feb 14, 2020 · 2 comments · May be fixed by #737
Open

traceback incorrect with contextlib.contextmanager #736

slozier opened this issue Feb 14, 2020 · 2 comments · May be fixed by #737
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@slozier
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slozier commented Feb 14, 2020 

import contextlib

@contextlib.contextmanager
def test():
    yield

with test():
    raise Exception

produces the following traceback:

Traceback (most recent call last):
  File "...\contextlib.py", line 77, in __exit__
  File "<stdin>", line 3, in test
Exception

instead of the expected:

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
Exception
@slozier
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slozier commented Feb 14, 2020 •
edited
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Might be equivalent to:

import sys

def test2():
    yield

try:
    gen = test2()
    raise Exception()
except:
    try:
       gen.throw(*sys.exc_info())
    except:
       pass
    raise

which gives:

Traceback (most recent call last):
  File "<stdin>", line 6, in <module>
  File "<stdin>", line 0, in test2
Exception

instead of:

Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
Exception

@slozier slozier linked a pull request Feb 15, 2020 that will close this issue
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@slozier slozier added the bug label Feb 17, 2020
@slozier
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slozier commented Feb 17, 2020

Same as IronLanguages/ironpython2#493?

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Don't remove traceback on rethrow slozier/ironpython3
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@slozier