Problem I’ve installed beets in a Docker image that’s based on debian:buster with only python 2 installed. Running beets yields this error message: $ beet Led to this problem: Setup OS: debian buster Python version: 2.x beets version: latest Turning off plugins made problem go away (yes/no): no Solution The problem comes from the dependency […]

I am newbie on Python. I run the following code on python 2.7 and I see different result when I use print or print(). What is the difference between these two functions? I read other questions e.g., this question, but I didn’t find my answer. The result is: SOLVING : In Python 2.7 (and before), […]

I use a chess application called “Lucaschess” and it needs PyQt4 module to work. Is it possible to install Pyqt4 on ubuntu 20.04. I understand that ubuntu no longer supports this package but is there anyway which i can work around? The Qt4 packages can still be obtained from third party PPA: Then you have […]

I’m trying to install opencv-python package via pip inside virtual environment (Python 2.7). Unfortunately, I’m getting an error: I’ve tried to create a new environment or installing through python2 -m pip install but the effect is the same. What’s the problem? Python 2.7 is not supported anymore in opencv-python-4.3.0.38 the support was dropped since 4.3.0.36, […]

Install packages needed for compiling (I am not sure these all are needed): Download sources of the latest SIP – sip-4.12.4.tar.gz (Linux, UNIX, MacOS/X source). Unpack them and enter the directory: Download the sources of the latest PyQt – PyQt-x11-gpl-4.8.5.tar.gz (Linux, UNIX source), and install it: Note, that I am launching python3 instead of python. […]