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I'm not an expert in Ubuntu, so maybe it's a stupid question, but I'm having problems trying to install a software called pyPENELOPE. Following the steps in their site http://pypenelope.sourceforge.net/download.html I tried the comand

sudo dpkg -i /path/python-penelope_0.2.10-1_all.deb

But I've received the error message

Preparing to unpack .../python-penelope_0.2.10-1_all.deb ...
Upgrading pyPENELOPE
Unpacking python-penelope (0.2.10-1) over (0.2.10-1) ...
dpkg: dependency problems prevent configuration of python-penelope:
 python-penelope depends on python-wxgtk2.8; however:
  Package python-wxgtk2.8 is not installed.

dpkg: error processing package python-penelope (--install):
 dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.13.3-11ubuntu1.1) ...
Processing triggers for desktop-file-utils (0.23-1ubuntu3.18.04.2) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Errors were encountered while processing:
 python-penelope

What I'm doing wrong?

Tanus Szabo
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  • Install the dependency: sudo apt-get install python-wxgtk2.8 before unpacking pyPenelope. – Ollie Jun 24 '20 at 20:46
  • I've received the message `Reading package lists... Done Building dependency tree
    Reading state information... Done Package python-wxgtk2.8 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source

    E: Package 'python-wxgtk2.8' has no installation candidate`

     – Tanus Szabo Jun 24 '20 at 20:50
  • Does this answer your question? How do I install a .deb file via the command line? – N0rbert Jun 25 '20 at 07:15
  • I am also trying to get pyPenelope to work (by converting the code to python 3). Tanus, did you manage to get it to work ? – cghw Oct 31 '22 at 21:38

1 Answers1

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The problem is that sudo dpkg --install filename.deb only identifies dependencies. It doesn't handle those dependencies automatically. You must install the dependencies (in the correct order) yourself.

That's why your output is complaining about "dependency problems": dpkg is telling you that you neglected to install the other package first.

  • Try using sudo apt install ./filename.deb instead. Apt DOES handle dependencies automatically.

  • If you read that dpkg -i instruction somewhere, please ping the author to update their documentation.

However, that won't work either for you due to a SEPARATE coincidental problem: The package python-wxgtk2.8 was dropped from Ubuntu after Ubuntu 14.04.

Seems like you're trying to use very old, unmaintained software. If you encounter problems, we don't provide support for it (sorry).

user535733
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