Better reporting for non-keyword arg syntax error

[pytestbot]

Originally reported by: Wayne Werner (BitBucket: waynew, GitHub: waynew)

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When running pytest I got this error:

E SystemError: ../Objects/tupleobject.c:143: bad argument to internal function

Which was quite confusing. After searching, I found issue #154, which led me to find the actual issue - that I was getting this error:

SyntaxError: non-keyword arg after keyword arg

It seems that there might be an issue in general with SyntaxError handling within pytest - though I haven't looked through the source to see if there's a better way to handle that.

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• Bitbucket: https://bitbucket.org/pytest-dev/pytest/issue/356

[pytestbot]

Original comment by holger krekel (BitBucket: hpk42, GitHub: hpk42):

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can you post an example that produces the problem?

[pytestbot]

Original comment by Wayne Werner (BitBucket: waynew, GitHub: waynew):

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This should do it.

[pytestbot]

Original comment by Ronny Pfannschmidt (BitBucket: RonnyPfannschmidt, GitHub: RonnyPfannschmidt):

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can reproduce on python3.2, seems like a bug in ast

[pytestbot]

Original comment by Ronny Pfannschmidt (BitBucket: RonnyPfannschmidt, GitHub: RonnyPfannschmidt):

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i identified it as a bug in python, there seems to be no reasonable workaround

[pytestbot]

Original comment by Ronny Pfannschmidt (BitBucket: RonnyPfannschmidt, GitHub: RonnyPfannschmidt):

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according to http://bugs.python.org/issue11441 it is no longer a issue
futrher investigation shows that a python update is needed

[pytestbot]

Original comment by holger krekel (BitBucket: hpk42, GitHub: hpk42):

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thanks ronny. so a Python update should solve it.