[EMAIL PROTECTED] wrote:
> I'm not making progress with the following and would appreciate any
> help.
>
> Here's an interpreted Python session.
>
>>>> import sys
>>>> def f(): pass
> ...
>>>> this_module = sys.modules[__name__]
>>>> delattr(this_module, 'f')
>>>> f()
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> NameError: name 'f' is not defined
>
> Suppose I want to doctest this behaviour. I cut and paste the above
> into a file "test.txt" then run:
>
> python -c "import doctest; doctest.testfile('test.txt')"
>
> This gives me unexpected test failures:
>
> python -c "import doctest; doctest.testfile('test.txt')"
> **********************************************************************
> File "test.txt", line 5, in test.txt
> Failed example:
> delattr(this_module, 'f')
> Exception raised:
> Traceback (most recent call last):
> File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/doctest.py", line 1212, in __run
> compileflags, 1) in test.globs
> File "<doctest test.txt[3]>", line 1, in <module>
> delattr(this_module, 'f')
> AttributeError: f
> **********************************************************************
> File "test.txt", line 6, in test.txt
> Failed example:
> f()
> Expected:
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> NameError: name 'f' is not defined
> Got nothing
> **********************************************************************
> 1 items had failures:
> 2 of 5 in test.txt
> ***Test Failed*** 2 failures.
The doctest code is executed in a module without a __name__, it seems.
Unfortunately (in this case) the builtin module serves as a fallback
helping out with its own name:
>>> __name__
'__main__'
>>> del __name__
>>> __name__
'__builtin__'
What to do about it? doctest could be changed to execute code snippets in a
module with a name and a sys.modules entry though I don't see much benefit
here.
Peter
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