Problem with Python library [libsmartpen]

[trintadosete]

I am trying to recognize a (livescribe) smartpen on linux.

A guy developed a library (https://github.com/srwalter/libsmartpen) and a browser (https://github.com/srwalter/smartpen-browser) to access its file. I installed both using his PPA, but when I run the browser, i got the message:

Traceback (most recent call last):
File "/usr/bin/smartpen-browser.py", line 4, in
import pysmartpen
ImportError: No module named pysmartpen

He asked my to run the commands dpkg -L libsmartpen and ldd /usr/lib/pyshared/python2.7/pysmartpen.so and got:

/.
/usr
/usr/share
/usr/share/python-support
/usr/share/python-support/libsmartpen.public
/usr/share/doc
/usr/share/doc/libsmartpen
/usr/share/doc/libsmartpen/copyright
/usr/share/doc/libsmartpen/changelog.Debian.gz
/usr/share/pyshared
/usr/share/pyshared/pysmartpen-0.0.0.egg-info
/usr/share/pyshared/parsestf.py
/usr/lib
/usr/lib/libsmartpen.so
/usr/lib/pyshared
/usr/lib/pyshared/python2.7
/usr/lib/pyshared/python2.7/pysmartpen.so
/lib
/lib/udev
/lib/udev/rules.d
/lib/udev/rules.d/75-smartpen.rules

And:

    linux-vdso.so.1 =>  (0x00007fffbfb8a000)                                                                                                                            
    libsmartpen.so => /usr/lib/libsmartpen.so (0x00007f61fa283000)                                                                                                                           
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f61fa065000)                                                                                                                           
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f61f9c9b000)                                                                                                                           
    libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f61f998c000)                                                                                                                           
    libopenobex.so.1 => /usr/lib/libopenobex.so.1 (0x00007f61f9782000)                                                                                                                           
    libusb-1.0.so.0 => /lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007f61f956a000)                                                                                                                           
    /lib64/ld-linux-x86-64.so.2 (0x00007f61fa68c000)                                                                                                                           
    libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f61f92fd000)                                                                                                                            
    libusb-0.1.so.4 => /lib/x86_64-linux-gnu/libusb-0.1.so.4 (0x00007f61f90f4000)                                                                                                                            
    libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007f61f8ee1000)

The author has no idea of what is happening. But I got the same behaviour in tw different pcs runing kubuntu 15.04.

Any ideas?

[elijathegold]

What you you get if you run

import sys
sys.path

Also from the terminal can you run

locate smartpen.py

[elijathegold]

I've just found the guy's ppa and it looks like it only supports up to 14.04 which may be causing the issue, I don't know if files paths or versions have changed from 14.04 to 15.04. Another option may be to un-install from the ppa and grab the zip file from the github page and run

sudo python setup.py

from within the extracted directory.

*** DO NOT DO THIS. IT GETS COMPLICATED QUICKLY ***

[elijathegold]

OK got it working!

This involves editing the file /usr/bin/smartpen-browser.py so you may want to back it up first.

Open a terminal and run the command

sudo nano /usr/bin/smartpen-browser.py

and give your password when asked.

Edit the first lines of code to add the highlighted lines

#!/usr/bin/python

[COLOR=#ff0000]import sys
sys.path.append("/usr/lib/pyshared/python2.7")
sys.path.append("/usr/share/pyshared/")[/COLOR]
import gtk
import pysmartpen

Save the file by pressing Ctrl + O and then enter and exit nano using Ctrl + X. It should now run but I don't have a light pen so can't really test things.

[edit]

I wasn't entirely happy with the solution above. Adding the following line to your ~/.bashrc is a far more elegant solution.

export PYTHONPATH=/usr/lib/pyshared//python2.7/:/usr/share/pyshared/:PYTHONPATH

and then run

source .bashrc

to reload the file.


[/edit]

[trintadosete]

It worked for me!
Thank you, man.