wxPython Error: running HTML2

[waffen]

Hello,
I have a problem running the wxPython v.3.0 Official Demo in my Ubuntu 14.10 64bits, when I try to run the HTML2 app give me the error attached in the screenshot and dont work.

Library with the problem:
/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_html2.x86_64-linux-gnu.so

All of these using official Ubunt packages and installations from repos.

I need to mention in a VirtualBox running Ubuntu 14.04 I compiled my self the wxPython v 3.0 from sources and ALL works fine.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: libwxgtk3.0-0 3.0.1-3
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Nov 3 09:12:48 2014
InstallationDate: Installed on 2014-06-27 (129 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcEnviron:
 LANGUAGE=es_PE:es
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_PE.UTF-8
 SHELL=/bin/bash
SourcePackage: wxwidgets3.0
UpgradeStatus: Upgraded to utopic on 2014-10-23 (10 days ago)

[waffen (mlacunza)]

I can add a test file t.py with a simple import lines and the command line error when I run that file:

mario@mario-IdeaPad-S410p:~/Escritorio$ python t.py
Traceback (most recent call last):
  File "t.py", line 2, in <module>
    import wx.html2 as webview
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/html2.py", line 8, in <module>
    import _html2
ImportError: /usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_html2.x86_64-linux-gnu.so: undefined symbol: wxEVT_WEBVIEW_NAVIGATED

[Olly Betts (ojwb)]

I think you can work around this by installing the libwxgtk-webview3.0-0 package and preloading the library from it like so:

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.2.0 python t.py

I've haven't looked into why this is needed yet though.

[Olly Betts (ojwb)]

That command line got line-wrapped - t.py should be on the same line as python.

[waffen (mlacunza)]

I already have that lib and his dev package, same problem here the results:

mario@mario-IdeaPad-S410p:~/Escritorio$ LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.2.0 python t.py
ERROR: ld.so: object '/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.2.0' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
Traceback (most recent call last):
  File "t.py", line 2, in <module>
    import wx.html2 as webview
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/html2.py", line 8, in <module>
    import _html2
ImportError: /usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_html2.x86_64-linux-gnu.so: undefined symbol: wxEVT_WEBVIEW_NAVIGATED
mario@mario-IdeaPad-S410p:~/Escritorio$ LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.2.0
mario@mario-IdeaPad-S410p:~/Escritorio$ python t.py
Traceback (most recent call last):
  File "t.py", line 2, in <module>
    import wx.html2 as webview
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/html2.py", line 8, in <module>
    import _html2
ImportError: /usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_html2.x86_64-linux-gnu.so: undefined symbol: wxEVT_WEBVIEW_NAVIGATED

[waffen (mlacunza)]

Any update for this bug?? I cant create an application because this bug exist, thanks!

[Mark A. Hershberger (hexmode)]

Just ran into a similar problem. I still have problems, but at least wxPython is working now.

Your LD_PRELOAD is wrong. You can tell by the message "'/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.2.0' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored."

I found my lib and used that path in LD_PRELOAD and it worked.

To find your lib: find /usr/lib/x86_64-linux-gnu/ -name *webview*

[waffen (mlacunza)]

HI,
thanks yes the path is wrong heres in my laptop:

mario@mario-IdeaPad-S410p:~/Escritorio$ find /usr/lib/x86_64-linux-gnu/ -name *webview*
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0
/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.1.0

my lib is libwx_gtk2u_webview-3.0.so.0.1.0 and not libwx_gtk2u_webview-3.0.so.0.2.0 like Olly Betts (ojwb) wrote. Maybe thats the problem?

[waffen (mlacunza)]

Now my command:

mario@mario-IdeaPad-S410p:~/Escritorio$ LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.1.0 python t.py

works fine...

[waffen (mlacunza)]

and running the demo for wxPython 3.0.0 works fine if I use this command:

mario@mario-IdeaPad-S410p:~/Descargas/Python/wxPython/wxPython-3.0.0.0/demo$ LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libwx_gtk2u_webview-3.0.so.0.1.0 python demo.py

[waffen (mlacunza)]

With the previous information can I create a simple fix or workaround?

[waffen (mlacunza)]

Today Ubuntu update related packages, but the same error persist!!! when can you fix it?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[waffen (mlacunza)]

I just update to 15.04 and the same error!!

[olavl (olavl)]

This bug seems to be still present in Xubuntu 15.10.

[waffen (mlacunza)]

and in Ubuntu 15.10 64bits I just tested it, check attached screenshot, taked from Virtualbox

[waffen (mlacunza)]

This bug have ONE YEAR and its not fixed, its only Ubuntu bug, because I compile wxpython from sources and html2 works fine.

Because of that now all the packages using it (pgadmin3 for example) dont work and i need to compile ALL from sources.....

Im using 15.10 now when you will going to fix it??

[Yuriy Vidineev (adeptg)]

I've just checked on 16.04

import wx
import wx.html2 as webview

python t.py
Traceback (most recent call last):
  File "t.py", line 2, in <module>
    import wx.html2 as webview
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/html2.py", line 8, in <module>
    import _html2
ImportError: /usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_html2.x86_64-linux-gnu.so: undefined symbol: wxEVT_WEBVIEW_NAVIGATED

So the same problem

[Yuriy Vidineev (adeptg)]

Debian has fixed it
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=821934

Can we backport such changes?

[Launchpad Janitor (janitor)]

This bug was fixed in the package wxpython3.0 - 3.0.2.0+dfsg-2

---------------
wxpython3.0 (3.0.2.0+dfsg-2) unstable; urgency=medium

  [ Scott Talbert ]
  * Add binary package python-wxgtk-webview3.0 for wx.html2.
    (Closes: #821934, LP: #1388847)

  [ Olly Betts ]
  * Restore "Suggests: wx3.0-doc" as wx3.0-doc now exists.
  * debian/control: "Standards-Version: 3.9.8" - changes for conformance:
    + debian/python-wxtools.menu: Remove obsolete menu file.
  * debian/control: Give secure https URL for anon git access.

 -- Olly Betts <email address hidden> Mon, 02 May 2016 11:03:40 +1200

[waffen (mlacunza)]

HI

when this bug will be fixed?
Im using latest Ubuntu 16.04 LTS and the version founded in repos is: wxpython3.0 - 3.0.2.0+dfsg-1.3 and the bug is still there.

[Vaclav Petras (wenzeslaus)]

As a workaround, you can install the two following packages (or maybe just one of them):

python-wxgtk-webview3.0_3.0.2.0+dfsg-3
python-wxgtk3.0_3.0.2.0+dfsg-3

Download URLs for AMD64:

https://launchpad.net/ubuntu/+archive/primary/+files/python-wxgtk-webview3.0_3.0.2.0+dfsg-3_amd64.deb
https://launchpad.net/ubuntu/+archive/primary/+files/python-wxgtk3.0_3.0.2.0+dfsg-3_amd64.deb

[pouns (pouns1)]

This bug is still here in 16.04. Any chance it get fixed soon ?