ImportError: No module named PyQT4

Francois_C · 02-07-2015, 07:30 AM

Hi,

This is the message I get when I want to set Preferences > Conversion > Output options on Ubuntu Studio 14.04 64-bit.

Whereis python gives:

Code:

python: /usr/bin/python3.4m /usr/bin/python3.4 /usr/bin/python2.7 /usr/bin/python /etc/python3.4 /etc/python2.7 /etc/python /usr/lib/python3.4 /usr/lib/python2.7 /usr/bin/X11/python3.4m /usr/bin/X11/python3.4 /usr/bin/X11/python2.7 /usr/bin/X11/python /usr/local/lib/python3.4 /usr/local/lib/python2.7 /usr/include/python2.7 /usr/share/python /usr/share/man/man1/python.1.gz

which Python:

Code:

/usr/bin/python

import PyQt4 hangs till i click somewhere on the desktop.

???

Thanks.

pdurrant · 02-07-2015, 07:43 AM

You've either found a bug in calibre, or more likely you have a plugin that hasn't been updated to use the PyQt5 that calibre now uses instead of PyQt4.

Check your plugins.

theducks · 02-07-2015, 01:12 PM

That indicates an (longish) out of date PI. Calibre 2.x requires QT5 compatible PI.

If there is an updated PI for a PI listed at the top of this forum, it will show on the Get Plugins: Update tab

If the PI was obtained elsewhere (or not in the index), you need to get the update there.
Your other choice is to rollback Calibre to pre 2.x

eschwartz · 02-08-2015, 01:50 AM

What is the specific error message? There should be a popup box with the message. If not, running calibre via the command "calibre-debug -g" will get you a log of everything.

I am guessing the issue is probably an out-of-date plugin.

The error message should include where that message was triggered, probably somewhere in a plugin's code.

Francois_C · 02-13-2015, 08:57 AM

Thanks everybody. I'll check my plugins when I'm back to Linux (now working on Windows). But I think my plugins are almost the same as on Windows. The oldest ones are probably Inept Epub and so on, which are not supported here, but don't cause errors on the Win version.
The only error message is in my title, eschwatz: ImportError: No module named PyQT4.

pdurrant · 02-13-2015, 08:59 AM

Quote:

Originally Posted by Francois_C

Thanks everybody. I'll check my plugins when I'm back to Linux (now working on Windows). But I think my plugins are almost the same as on Windows. The oldest ones are probably Inept Epub and so on, which are not supported here, but don't cause errors on the Win version.
The only error message is in my title, eschwatz: ImportError: No module named PyQT4.

Inept Epub is too old for calibre 2.x. You should get the latest tools from Apprentice Alf's blog.

eschwartz · 02-13-2015, 11:47 AM

Quote:

Originally Posted by Francois_C

Thanks everybody. I'll check my plugins when I'm back to Linux (now working on Windows). But I think my plugins are almost the same as on Windows. The oldest ones are probably Inept Epub and so on, which are not supported here, but don't cause errors on the Win version.
The only error message is in my title, eschwatz: ImportError: No module named PyQT4.

Yeah, Inept EPUB etc. are too old.

Also, usually there would be a button "Show details", but calibre-debug -g would definitely log it -- the goal is to get a traceback showing which functions led to the ImportError, likely a plugin reference.
You can try that if updating to the latest Alf tools doesn't stop the error.

02-07-2015, 07:30 AM	#1
Francois_C Zealot Posts: 106 Karma: 8300 Join Date: Jul 2012 Location: France Device: Kobo Aura H2O, Kobo Touch, Kobo Mini	ImportError: No module named PyQT4 Hi, This is the message I get when I want to set Preferences > Conversion > Output options on Ubuntu Studio 14.04 64-bit. Whereis python gives: Code: python: /usr/bin/python3.4m /usr/bin/python3.4 /usr/bin/python2.7 /usr/bin/python /etc/python3.4 /etc/python2.7 /etc/python /usr/lib/python3.4 /usr/lib/python2.7 /usr/bin/X11/python3.4m /usr/bin/X11/python3.4 /usr/bin/X11/python2.7 /usr/bin/X11/python /usr/local/lib/python3.4 /usr/local/lib/python2.7 /usr/include/python2.7 /usr/share/python /usr/share/man/man1/python.1.gz which Python: Code: /usr/bin/python import PyQt4 hangs till i click somewhere on the desktop. ??? Thanks.

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02-07-2015, 07:43 AM	#2
pdurrant The Grand Mouse 高貴的老鼠 Posts: 74,447 Karma: 318076944 Join Date: Jul 2007 Location: Norfolk, England Device: Kindle Oasis	You've either found a bug in calibre, or more likely you have a plugin that hasn't been updated to use the PyQt5 that calibre now uses instead of PyQt4. Check your plugins.

02-07-2015, 01:12 PM	#3
theducks Well trained by Cats Posts: 31,267 Karma: 61916422 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	That indicates an (longish) out of date PI. Calibre 2.x requires QT5 compatible PI. If there is an updated PI for a PI listed at the top of this forum, it will show on the Get Plugins: Update tab If the PI was obtained elsewhere (or not in the index), you need to get the update there. Your other choice is to rollback Calibre to pre 2.x

02-08-2015, 01:50 AM	#4
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	What is the specific error message? There should be a popup box with the message. If not, running calibre via the command "calibre-debug -g" will get you a log of everything. I am guessing the issue is probably an out-of-date plugin. The error message should include where that message was triggered, probably somewhere in a plugin's code.

02-13-2015, 08:57 AM	#5
Francois_C Zealot Posts: 106 Karma: 8300 Join Date: Jul 2012 Location: France Device: Kobo Aura H2O, Kobo Touch, Kobo Mini	Thanks everybody. I'll check my plugins when I'm back to Linux (now working on Windows). But I think my plugins are almost the same as on Windows. The oldest ones are probably Inept Epub and so on, which are not supported here, but don't cause errors on the Win version. The only error message is in my title, eschwatz: ImportError: No module named PyQT4.