#11287: Interface to runsnake and import_statements
------------------------------------------+---------------------------------
Reporter: nthiery | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: performance | Keywords: runsnake, prun,
profiling, days30
Work_issues: | Upstream: N/A
Reviewer: Franco Saliola, Simon King | Author: Nicolas M. Thiéry
Merged: | Dependencies:
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Comment(by saliola):
Replying to [comment:21 nthiery]:
> MacOS users (Anne!): The runsnake run author was kind enough to add a
workaround in runsnake to make it work out of the box on MacOS. He would
like to get it tested. Could you try out the attached devel version of
runsnake, and see if:
I gave it a try, and have some comments.
1. The patch does not apply cleanly on top of sage-4.7.rc1; in the file
`doc/en/reference/misc.rst` there is a conflict because of `classgraph`.
So your patch needs a very trivial rebase.
2. I checked and it seems that wxPython is already installed on two
different Mac OS X systems I tested. Is this a standard python library on
Mac OSX? So there might be no need to install it.
3. Just running runsnake does not work:
{{{
Traceback (most recent call last):
File "/usr/local/bin/runsnake", line 8, in <module>
load_entry_point('RunSnakeRun==2.0.1', 'gui_scripts', 'runsnake')()
File "/Library/Python/2.6/site-
packages/RunSnakeRun-2.0.1-py2.6.egg/runsnakerun/macshim.py", line 7, in
macshim
env={"VERSIONER_PYTHON_PREFER_32_BIT":"yes"}
File
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py",
line 444, in call
return Popen(*popenargs, **kwargs).wait()
File
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py",
line 595, in __init__
errread, errwrite)
File
"/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py",
line 1106, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
}}}
So I started poking around in {{{macshim.py}}}. It seems the problem is
with the env dictionary
{{{
env={"VERSIONER_PYTHON_PREFER_32_BIT":"yes"}
}}}
The documentation for the subprocess module says that env must provide any
variables required for the program to execute. This includes the path; so
one either needs to provide the path to runsnake32 as an environment
variable, or just give the complete path to runsnake32. Here is a modified
version of {{{macshim.py}}} that works for me:
{{{
def macshim():
"""Shim to run 32-bit on 64-bit mac as a sub-process"""
import subprocess, sys
subprocess.call([
sys.argv[0]+'32'
]+sys.argv[1:],
env={"VERSIONER_PYTHON_PREFER_32_BIT":"yes"}
)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11287#comment:25>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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