gmane.comp.python.xy.devel

noob: Pythonxy vs Spyder and startup questions/confusion

psoriasis — 2013-05-17T04:19:06

So I've installed pythonxy and there's a shortcut to pythonxy that
brings up a "Python(x,y) Home" window that I really don't understand
what it's for.(?)  It looks like some sort of option gui.  I'm not
sure where the doc on this window is.

To actually "do" python, I end up opening up Spyder directly (from its
installed shortcut in my Windows Start/programs list).  I don't know
if that's the right thing to do (?)
It then does a bunch of importing.  I think it uses the ...\\xy
\startups\default.py script to do the importing but I'm not sure(?)
and I don't know how I would find out(?)

BTW, what's the best way, in spyder, to find out what modules have
been imported?

cvxopt version update 1.1.5 -> 1.1.6

Sylvain Corlay — 2013-05-15T15:30:55

Hello, do you guys plan to update cvxopt in 2.7.4.0? 
The last version (1.1.6) corrects some compatibility issues with numpy,
Cheers, 
Sylvain

gl2ps option didn't turn on

Anatoly Belanovsky — 2013-05-05T12:13:54

Hi,

I saw here the post about gl2ps, there was written that export to eps from 
mayavi was enabled. Unfortunately I can't save my scene to.eps file. How 
can I fix it?

Winpdb doesn't launch (new full install)

psoriasis — 2013-04-30T15:42:40

Running on win xp sp3 32 bit with the latest full install.  Pressing F7 
does nothing (is there another way?).  I don't see any "winbdp" item in the 
python(x,y) group (on the start menu) and apparently there is no file name 
with "winpdb" in it on my drives.

mayavi export to x3d

Anatoly Belanovsky — 2013-04-22T23:18:34

Hello,

I'm new in mayavi. Is there any way to export my scene from mayavi to x3d 
format? Because when I'm exporting it to the .obj file and then put to the 
blender it looses all colors.

Numba + python(x,y)

Sylvain Corlay — 2013-04-18T00:10:28

Hello everyone, 

Is there any plan to integrate numba with the next release of python(x,y)? 

Cheers,

Sylvain

Awesome work

Aaron O'Toole — 2013-04-05T01:27:33

Thanks for Python(x,y). I've converted at least 5 people I work with from 
Matlab to python due to this distro. It's a strong weapon for python. Keep 
up the great work! Python(x,y) is perfect IMO.

Launching IPython Qt Console causes python.exe to stop working.

Alejandro Villegas — 2013-04-03T01:31:40

I have installed python(x,y) in Windows 8 Pro 64bit as an alternative to 
Matlab to perform engineering calculations, still I am a newbie when it 
comes to python language and all the installations packages.
Every time I try to open IPython Qt Console from the application launcher 
(from python(x,y) icon on desktop), an error message pops up notifying 
python.exe has stopped working. It happens also when the IPython Qt console 
is launched form the windows start menu using its own icon.
Does someone have an idea what's going on? Please refer to the attach 
picture to see an screenshot of what happen when the application is 
launched.

Launching IPython Qt Console causes python.exe to stop working.

Alejandro Villegas — 2013-04-02T02:56:22

haj

New version of Python(x,y)

Ravish Bapna — 2013-03-28T15:32:51

Can anyone tell me when will a new release of Python(x,y) will be available?

selection in the terminal

Quentin Chateiller — 2013-03-25T18:29:16

Hello, 

I would like to know how to make an input using arrow keys to select one 
option in the terminal among several.

Thank you !

Installing new and upgrading old plugins

marko — 2013-03-20T06:05:58

I am not familiar with the Python package installers. I would like to know 
how to upgrade and install plugins without messing my Python(x,y) install.
 
What is the correct procedure when I want to upgrade an existing plugin to 
a newer version?
 
What is the correct procedure when I want to install a new plugin that is 
not part of my current Python(x,y) install?
 
Thanks for the great piece of software,
Marko.

Problems with installing scikit-sklearn .13.1-3

Anne Dwyer — 2013-03-18T00:20:37

I tried to install the updated plug in for scikit-sklearn version .13.1-3 
on the plugins update page for Python(x,y).

Python(x,y) shows that scikit-sklearn has been update but when I try to 
import something, I get an error:

from sklearn import preprocessing
  File "C:\Python27\lib\site-packages\sklearn\preprocessing.py", line 14, 
in <module>
    from .utils import check_arrays, array2d, atleast2d_or_csr, safe_asarray
  File "C:\Python27\lib\site-packages\sklearn\utils\__init__.py", line 9, 
in <module>
    from .murmurhash import murmurhash3_32
ImportError: cannot import name murmurhash3_32

I saw a question in stackoverflow that looks just like this. Here's the 
link: 
http://stackoverflow.com/questions/15274696/error-in-importing-from-sklearn

Is anyone else having this error and does anyone know how to fix this?

Consider Replacing SciTE with Geany in Windows Package

Redoubts — 2013-03-13T17:42:19

I think Python (x,y) should consider replacing SciTE with a Scintilla 
derivative instead. Geany <http://www.geany.org/>is in active development, 
and is in the same family as SciTE, but seems more user friendly and easily 
extensible. SciTE on its own is nice and light, but customization is 
annoying and frustrating at times. In particular, syntax highlighting 
rarely/never inherits from the common style settings, but is individually 
hard coded for almost every language supported.

add a link to the "major" release on the Download area

Erik Chang — 2013-03-01T06:39:46

Dear maintainer of the python(x,y) wiki,  

Although it would seem quite basic to experienced pythong(x,y) users that 
one should go into the link to the Mirrors for downloading the major 
releases (such as Python(x,y)-2.7.3.0.exe<http://ftp.ntua.gr/pub/devel/pythonxy/Python(x,y)-2.7.3.0.exe>) 
for installation, for beginners it was not obvious at all. It is intuitive 
for newbies to assume that the link provided on the top of the download 
area (e.g., Python(x,y)-2.7.3.1.exe<http://ftp.ntua.gr/pub/devel/pythonxy/Python(x,y)-2.7.3.1.exe>) 
would be the one for installation from fresh, and after the error message 
says that it depends on the major release, it takes some efforts to figure 
out where to find it. 

Perhaps there is a reason to not put a direct link to the major release on 
the download area, but I really think that information would be quite 
helpful and convenient, at least for beginners. 

Cheers, 

Erik

Python(x,y) Launcher Missing Applications and Plugins - partial workaround

Brett Ables — 2013-02-27T22:07:59

When I recently switched from a previous version of Python(x,y) to the 
current version, the Python(x,y) launcher seemed to "break."

Here's the things that appeared to be missing

   - Nothing but Scite in the Applications list
   - Python Modules window is completely empty, switching categories 
   doesn't do anything
   - Installed Plugins list contains SciTE, Console, mingw, swig, xydoc, 
   (and unum, which I installed with the optional plugins installer

I realized that I'm getting good enough with Python I could probably find 
the problem myself, and I think I did.

In xyhome.pyw, a list of applications is hard coded, then each application 
is checked for validity.  It is checked against a list of plugins created 
in config.py, and the site_packages directory.

The plugins list is apparently generated based on the "Software\Python(x,y)\uninstall" 
registry key, which is supposed to contain references to all installed 
plugins. Apparently though, hunting through the registry shows that most of 
the python modules got their own registry entries at the Software level, 
and only separate programs like Scite, Console, mingw, swig, etc. were 
listed under Python(x,y) in the registry.

I decided that I don't really care about what's in the registry and that as 
long as the site_packages folder is present, that's good enough for me, so 
I changed line 276 in xyhome.pyw from this:

if (PLUGINS.has_key(app) or app=='IDLE') and osp.exists(infos[0][1][0]):


to this:

 if osp.exists(infos[0][1][0]):


I'm not sure how to fix the plugins list issue - seems like the installer 
must be either putting registry keys in the wrong place, or the xy.config 
code needs to updated to look for them in the new location.

Just thought I'd post this in case it helps others or helps the developers 
for future versions.  It's always possible my installation is somehow wonky 
and I've simply made a workaround for my own problem.

Accessing cblas in pythonxy

Sergio Callegari — 2013-02-16T16:32:37

Hi,

I have a project that includes a cython script which in turn does some 
direct access to a couple of cblas functions.
This is necessary, since some matrix multiplications need to be done inside 
a tight loop that gets called thousands of times.
Speedup wrt calling scipy.linalg.blas.cblas routines is 10x to 20x.

Now, all this is very nice on linux where the setup script can assure that 
the cython code gets linked with the atlas dynamic library, which is the 
same library that numpy and scipy link to on this platform.

However, I now have trouble in providing easy ways to use my project in 
windows. Python(x,y) for windows 32 ships cython (OK) and the mingw 
compiler (OK). Furthermore numpy and scipy appear to use atlas as their 
blas implementation (at least this is what one can guess by looking at the 
strings in _dotblas.pyd). However, there is no stand alone atlas .lib and 
.dll file. I do not have tons of experience in the windows platform, but I 
guess that atlas is statically linked in numpy and scipy. Is this the case?

Missing a standalone set of atlas libraries, my current solution is to ship 
with my code a pre-built atlas from  
http://www.netlib.org/atlas/archives/windows/ but I would really not like 
to duplicate something that is already in python(x,y).

Any clue?  Could python(x,y) move to providing an atlas implementation that 
is directly usable from cython or when otherwise extending python from C?

Many thanks for any advice!

Instruction for additional mirroring?

Kyujin Shim — 2013-02-16T11:46:12

Hi guys,

First of all, I'd like to say thanks to all guys involved in python(x,y). 
I'd like to download and provide mirroring since it always took more than 
two hours for downloading in my location. 
Is there any mirroring instruction for this project? I couldn't find them 
in the website.

Regards,
Kyujin

Installation problem Windows 7 32 bit

Michael Swanson — 2013-02-03T21:16:53

Hi
Been trying to get this running for a few days now.
Upon completion of a full install as administrator, I have the python 
shortcut on desktop but it does not connect. 
I tried in interactive mode, and it seems I have a permissions problem.'
Could someone please help. 
This is the error..

"Traceback (most recent call last):
  File "C:\Python27\Scripts\xyhome.pyw", line 20, in <module>
    from xy import xyhome
  File "C:\Python27\lib\site-packages\xy\xyhome.pyw", line 28, in <module>
    from xy.config import (CONF, STARTUP_PATH, LOG_PATH, PLUGINS, 
XY_VERSION,
  File "C:\Python27\lib\site-packages\xy\config.py", line 33, in <module>
    CONF = UserConfig('xy', defaults=DEFAULTS, version=__version__, 
subfolder='.
xy')
  File "C:\Python27\lib\site-packages\xy\userconfig.py", line 105, in 
__init__
    self.__save()
  File "C:\Python27\lib\site-packages\xy\userconfig.py", line 139, in __save
    conf_file = file(self.filename(),'w')
IOError: [Errno 13] Permission denied: u'C:\\Users\\Michael\\.xy\\.xy.ini'

Thanking you in anticipation

Regards
Michael

GDAL HDF4 support

Daniel Victoria — 2013-01-22T16:01:41

Hi,

I'm using Python(x,y) ver. 2.7.3.1 which comes with GDAL version 1.9.2. I'm
trying to open some images that came in HDF4 however, the GDAL supplied
with Python(x,y) does not support that format. On the other hand, the GDAL
supplied by the OSGeo4W [1] includes the hdf4 driver.

Is there a way to make the Python(X,Y) use the GDAL supplied by the
OSGeo4W? Or could it be possible to update the gdal drivers?

Thanks
Daniel

[1] - http://trac.osgeo.org/osgeo4w/

How to customise the Spyder environment

Tom Cook — 2013-01-18T15:50:16

I'm trying to prepare a custom Spyder environment based on the Python(X,Y) 
Windows installer.  As far as I can tell, the right way to do this is to 
install my custom packages in the Python27 site-packages folder, but then 
I'm not sure how best to add them to the list of packages Spyder imports by 
default?  Is sitecustomize.py the right way to do this?  How does Spyder 
(and the other Python(X,Y) applications) import matplotlib etc?

Thanks,
Tom