This is the behavior of the default __import__() function, which doesn't
validate the existence of the fromlist items. Later on, the missing attribute
is detected while processing the import statement.
https://hg.python.org/cpython/file/v2.7.13/Python/import.c#l2575
The comtypes library relies on this (maybe) undocumented behavior, and we
got a bug report to TortoiseHg, sigh.
https://bitbucket.org/tortoisehg/thg/issues/4647/
The test added at 0be19b069edf verifies the behavior of the import statement,
so this patch only adds the test of __import__() function and works around
CPython/PyPy difference.
demandimport and setuptools and decorator (from ironpython) and
pygments leads to lots of fail.
If demandimport is disabled we should skip testing it...
This module depends on _winreg, which is windows-only. Recent versions
of setuptools load distutils.msvc9compiler and expect it to
ImportError immediately when on non-Windows platforms, so we need to
let them do that. This breaks in an especially mystifying way, because
setuptools uses vars() on the imported module. We then throw an
exception, which vars doesn't pick up on well. For example:
In [3]: class wat(object):
...: @property
...: def __dict__(self):
...: assert False
...:
In [4]: vars(wat())
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-4-2781ada5ffe6> in <module>()
----> 1 vars(wat())
TypeError: vars() argument must have __dict__ attribute
Which is similar to the problem we run into.
The stringification of sys.stderr is different in PyPy:
$ pypy -c 'import sys; print sys.stderr'
<open file '<fdopen>', mode 'w' at 0x00a42080>
$ python -c 'import sys; print sys.stderr'
<open file '<stderr>', mode 'w' at 0x10025a270>
The test will now ignore the exact value between the angle brackets.
The Windows-only wrapper around stdout is causing both of these tests to fail.
test-demandimport fails because it tries to print repr(sys.stdout). Use
stderr instead since that is not wrapped.
test-trusted fails because the wrapper doesn't handle softspace and an
unexpected extra space gets printed.
