Jeffrey Sax wrote:
Thanks Michael & Dino,
That gets me a step further:
from sympy import Symbol
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "c:\Program Files
(x86)\Python26\Lib\site-packages\sympy\__init__.py", line 44, in c:\Program
Files (x86)\Python26\Lib\site-packages\sympy\__init__.py
NameError: global name 'evalf' is not defined
An undefined name is an undefined name. Sympy must be doing some magic
somewhere to inject the name into the namespace.
evalf is a module that is part of sympy.core. This works fine on CPython
2.6. I can get around the problem by commenting out the offending line,
which doesn't seem to have any breaking side-effects.
Still, given the performance degradation, it seems odd you have to turn
frames on just to import a module regardless of whether you actually need
the frames functionality.
The decision was to remove _getframe if frames are disabled. As Jython
didn't used to define _getframe when it didn't have Python stack frames,
so there is some code in standard library modules that will detect and
workaround the absence of _getframe. Unfortunately there is a
corresponding amount of code that assumes it is always there so it's a
bit of a double bind.
All the best,
Michael Foord
Jeffrey
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dino Viehland
Sent: July-24-09 4:50 PM
To: Discussion of IronPython
Subject: Re: [IronPython] sympy on IP 2.6B2
-X:FullFrames promotes all local variables into the heap. So you can
always crawl the stack and look/change them for all methods.
-X:Frames only creates the frame objects and if something happens to
make us promote local variables (e.g. a closure, or a call to locals(),
exec, eval, dir(), vars()) then the local variables will be available
for that specific method.
-----Original Message-----
From: [email protected] [mailto:users-
[email protected]] On Behalf Of Michael Foord
Sent: Friday, July 24, 2009 1:47 PM
To: Discussion of IronPython
Subject: Re: [IronPython] sympy on IP 2.6B2
Try running it with frames switched on:
ipy.exe -X:Frames
or:
ipy.exe -X:FullFrames
Perhaps Dino can explain what the difference is between these two
modes... :-)
Michael
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