Bug 1101626 - python scripting support is missing
Summary: python scripting support is missing
Alias: None
Product: Fedora
Classification: Fedora
Component: kig
Version: 21
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Than Ngo
QA Contact: Fedora Extras Quality Assurance
Depends On: 1102667
TreeView+ depends on / blocked
Reported: 2014-05-27 16:03 UTC by Maurizio Paolini
Modified: 2015-07-18 02:07 UTC (History)
6 users (show)

Fixed In Version: kig-4.14.3-3.fc21
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-07-18 02:07:01 UTC
Type: Bug

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
KDE Software Compilation 335965 NOR REOPENED mathematical functions like sin, exp,... unusable in python scripts 2020-04-02 13:58:38 UTC

Description Maurizio Paolini 2014-05-27 16:03:43 UTC
Description of problem:

After some recent update python scripting support disappeared

Version-Release number of selected component (if applicable):


How reproducible:

Start kig and try to create a python script

Steps to Reproduce:
1. start kig
2. open "objects" menu
3. enter "Other" submenu
4. the entry for a python script is missing

Additional info:

Trying to compile from git source also seems to have problems to include python support, even if apparently all required packages are present

Comment 1 Rex Dieter 2014-05-27 16:40:25 UTC
May be a boost-python issue, libboost-python is not linked to libpython and has missing symbols on my box.

ldd -r /usr/lib64/libboost_python.so

that said, kig explicitly links python too, so that shouldnt be an issue.

Comment 2 Maurizio Paolini 2014-05-27 17:39:50 UTC
Both my laptop and my workstation use kernel-PAE.  The libboost_python.so lib
seems fine:

# ldd /usr/lib/libboost_python.so
        linux-gate.so.1 =>  (0xb7751000)
        libutil.so.1 => /lib/libutil.so.1 (0x45417000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x41a93000)
        libdl.so.2 => /lib/libdl.so.2 (0x41a8c000)
        librt.so.1 => /lib/librt.so.1 (0x41b5c000)
        libstdc++.so.6 => /lib/libstdc++.so.6 (0x41e97000)
        libm.so.6 => /lib/libm.so.6 (0x41ab0000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x41b12000)
        libc.so.6 => /lib/libc.so.6 (0x418cc000)
        /lib/ld-linux.so.2 (0x418a8000)

as of libpython, I have
# ls -l /usr/lib/libpython*
lrwxrwxrwx 1 root root      19 Feb 25 15:27 /usr/lib/libpython2.7.so -> libpython2.7.so.1.0
-r-xr-xr-x 1 root root 1661236 Feb 19 14:48 /usr/lib/libpython2.7.so.1.0
-rwxr-xr-x 1 root root 2300496 Mar  5 09:23 /usr/lib/libpython3.3m.so.1.0
-rwxr-xr-x 1 root root    6068 Mar  5 09:23 /usr/lib/libpython3.so

Anyway, can you reproduce the problem?  I am pretty sure that kig *had* python
support with Fedora 20 until some recent update...

Comment 3 Rex Dieter 2014-05-27 18:02:45 UTC
Try ldd  with -r option:

       -r --function-relocs
              Perform relocations for both data objects and functions, and report any missing objects or functions (ELF only).

Comment 4 Rex Dieter 2014-05-27 18:04:21 UTC
how recent?

Comment 5 Rex Dieter 2014-05-27 18:10:06 UTC
I'm wondering if this may be related,

that's the only relatively recent commit in kig I see touching the boost/python stuff.

Comment 6 Maurizio Paolini 2014-05-27 18:56:36 UTC
Ooops: actually it seems that *there is* python scripting support!  Strangely
I cannot find the menu entry to create a new script!

Anyway, when compiling from the git sources some saved files with
python scripting do not work and generate the error:

$ kig heptagonal_tessellation.kig 
kig(4431)/kdeui (kdelibs): Attempt to use QAction "edit_undo" with KXMLGUIFactory! 
kig(4431)/kdeui (kdelibs): Attempt to use QAction "edit_redo" with KXMLGUIFactory! 
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: /usr/lib/python2.7/lib-dynload/math.so: undefined symbol: PyFloat_Type

This seems related to you previous post.  Indeed
here is the ldd output... it seems there are *many* undefined symbols,
how can I fix that? However: the "missing python icon" suggests that the
problem is actually at the packaging level, is that so?

# ldd -r /usr/lib/libboost_python.so
        linux-gate.so.1 =>  (0xb77f1000)
        libutil.so.1 => /lib/libutil.so.1 (0x45417000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x41a93000)
        libdl.so.2 => /lib/libdl.so.2 (0x41a8c000)
        librt.so.1 => /lib/librt.so.1 (0x41b5c000)
        libstdc++.so.6 => /lib/libstdc++.so.6 (0x41e97000)
        libm.so.6 => /lib/libm.so.6 (0x41ab0000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x41b12000)
        libc.so.6 => /lib/libc.so.6 (0x418cc000)
        /lib/ld-linux.so.2 (0x418a8000)
undefined symbol: PyList_Insert (/usr/lib/libboost_python.so)
undefined symbol: PyString_InternFromString     (/usr/lib/libboost_python.so)
undefined symbol: PyString_AsString     (/usr/lib/libboost_python.so)
undefined symbol: PyUnicodeUCS4_FromEncodedObject       (/usr/lib/libboost_python.so)
undefined symbol: PyImport_Import       (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_InPlaceRshift        (/usr/lib/libboost_python.so)
undefined symbol: PyObject_CallMethod   (/usr/lib/libboost_python.so)
undefined symbol: PyIter_Next   (/usr/lib/libboost_python.so)
undefined symbol: PyNumber_Remainder    (/usr/lib/libboost_python.so)
undefined symbol: PyType_Ready  (/usr/lib/libboost_python.so)
undefined symbol: _PyEval_SliceIndex    (/usr/lib/libboost_python.so)
undefined symbol: PyFile_AsFile (/usr/lib/libboost_python.so)
undefined symbol: PyLong_FromUnsignedLong       (/usr/lib/libboost_python.so)
undefined symbol: PyMem_Free    (/usr/lib/libboost_python.so)

Comment 7 Maurizio Paolini 2014-05-29 11:46:30 UTC
Still, there is the problem that in no way I am able to access the panel for creating a new Python Script... The corresponding action seems to have vanished.

Comment 8 Rex Dieter 2014-05-29 12:01:54 UTC
Mind filing a bug upstream @ bugs.kde.org ?

Comment 9 Rex Dieter 2014-05-29 12:03:00 UTC
(and I'll look into the odd libboost_python linking issue in fedora)

Comment 10 Maurizio Paolini 2014-06-08 09:23:50 UTC
I filed a bug report as you suggestes: 
and now the problem has been fixed in the latest git master, and perhaps
in branch KDE/4.13.

I still have problems when trying to use math functions (sin, exp, ecc), when
using the source-compiled kig.

(In reply to Rex Dieter from comment #8)
> Mind filing a bug upstream @ bugs.kde.org ?

Comment 11 Maurizio Paolini 2014-06-09 17:44:00 UTC
(In reply to Rex Dieter from comment #9)
> (and I'll look into the odd libboost_python linking issue in fedora)

I opened a new bug report in bugs.kde.org https://bugs.kde.org/show_bug.cgi?id=335965 about the mathematical functions that are unusable in python scripts.

The problem could not be reproduced by the maintainer (Gentoo distribution)
and the feeling is that this is a problem specific to Fedora.
What is the best way to deal with the problem?

Comment 12 Maurizio Paolini 2014-09-01 10:21:08 UTC
Using mathematical functions is still impossible under Fedora.  Are there any
news on the subject?
The error given by kig concerns PyFloat_Type (undefined).  Indeed I have:

$ ldd -r /usr/lib/libboost_python.so 2>&1 | grep -i PyFloat_Type
undefined symbol: PyFloat_Type  (/usr/lib/libboost_python.so)

So there seems to be some library missing, but I have no idea what should
be installed. I have installed:

python-* (many of them)

Comment 13 Rex Dieter 2014-09-02 14:32:34 UTC
Still debating if this is a kig or boost bug (ie, who needs to link python libraries), see also bug #1102667

Comment 14 Maurizio Paolini 2014-09-02 15:18:40 UTC
(In reply to Rex Dieter from comment #13)
> Still debating if this is a kig or boost bug (ie, who needs to link python
> libraries), see also bug #1102667

Thank you for investigating the issue!  Is there any workaround while waiting for a clean resolution?

Comment 15 Rex Dieter 2014-09-02 15:30:49 UTC
I'm aware of no workaround yet, sorry.

Comment 16 Maurizio Paolini 2015-03-15 11:53:31 UTC
We are now at Fedora 21, with python 2.7.8-7.fc21, boost 1.55.0-8.fc21,
kig 4.14.3-1.fc21.

The problem is still there: I am not able to access mathematical functions
from a python script.

This is *very* unfortunate! Any news?

I am not able at the moment to post in the
upstream bug report https://bugs.kde.org/show_bug.cgi?id=335965
However it is marked as "RESOLVED DOWNSTREAM"

Comment 17 Rex Dieter 2015-03-16 00:59:49 UTC
upstream bug is now re-opened

Comment 18 Fedora Update System 2015-07-01 19:32:01 UTC
kig-4.14.3-3.fc21 has been submitted as an update for Fedora 21.

Comment 19 Fedora Update System 2015-07-03 18:37:21 UTC
Package kig-4.14.3-3.fc21:
* should fix your issue,
* was pushed to the Fedora 21 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kig-4.14.3-3.fc21'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).

Comment 20 Fedora Update System 2015-07-18 02:07:01 UTC
kig-4.14.3-3.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

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