I've just got around to looking at this, and the repro isn't working for me on
beta 5. I've created a.py and b.py:
a.py:
from b import BClass
class AClass:
pass
b.py:
from a import AClass
class BClass:
pass
and then I get:
IronPython 1.0.2280 (Beta) on .NET 2.0.50727.32
Copyright (c) Microsoft Corporation. All rights reserved.
>>> import a
Traceback (most recent call last):
File , line 0, in input##0
File , line 0, in __import__##4
File F:\Product\IronPython\IronPython\Experimental\a.py, line 1, in Initialize
File , line 0, in __import__##4
File F:\Product\IronPython\IronPython\Experimental\b.py, line 1, in Initialize
ImportError: cannot import AClass from a
And ditto for import b:
IronPython 1.0.2291 (Beta) on .NET 2.0.50727.32
Copyright (c) Microsoft Corporation. All rights reserved.
>>> import b
Traceback (most recent call last):
File , line 0, in input##0
File , line 0, in __import__##4
File F:\Product\IronPython\IronPython\Experimental\b.py, line 1, in Initialize
File , line 0, in __import__##4
File F:\Product\IronPython\IronPython\Experimental\a.py, line 1, in Initialize
ImportError: cannot import BClass from b
I'm wondering if this could be a Mono specific bug. Could you try one thing
and give me the result, start IronPythonConsole.exe w/ -X:ExceptionDetail
command line option.
Then after you start spinning hit Ctrl-C ? That should give you a nice full
stack trace of where we were when we were spinning, and if we're lucky we can
deduce what's going on from that.
Do you want to help develop Dynamic languages on CLR?
(http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038)
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Anthony Tarlano
Sent: Thursday, April 06, 2006 1:59 PM
To: Discussion of IronPython
Subject: [IronPython] Bug: module ImportError exception not being raised
Hi,
I found that IronPython Beta 5 is not raising ImportError and just
going into a livelock loop when there is a circular import between two
modules.
Here is the test case where you'll see CPython returning an
ImportError exception and IronPython spining
DELL# ls
a.py b.py
DELL# cat a.py
from b import BClass
class AClass:
pass
DELL# cat b.py
from a import AClass
class BClass:
pass
DELL# python a.py
Traceback (most recent call last):
File "a.py", line 1, in ?
from b import BClass
File "c:\usr\home\tony\ipbug\b.py", line 1, in ?
from a import AClass
File "c:\usr\home\tony\ipbug\a.py", line 1, in ?
from b import BClass
ImportError: cannot import name BClass
DELL# IronPythonConsole a.py <----------- This command
livelocks and never returns
Regards,
Anthony
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