Cannot install pyqt5 for python3.4 on windows 10

this will help The easiest way to install PyQt is to just use the installer (Link in your answer, step #5). If you install python 3.3, the installer will add all of the PyQt5 extras to that python installation automatically. You won't need to do any compiling (none of: nmake, nmake install, python configure).
All of the build options are available for if you need a custom install (for instance, using a different version of python, where there isn't an installer provided by riverbank computing).

wish help you to fix your issue I`m trying to install python3-pyqt5, but still getting the same error. I tried reinstalling ubuntu, updating and upgrading my apt-get and still no clue whats wrong. , I found that I just needed to type:

sudo add-apt-repository universe

sudo apt-get update

wish of those help I am part of a Gitlab python3 project where we are trying to install continuous integration thanks to the file .gitlab-ci.yml. , For now, my solution is to install pyqt5 with apk:

apk add py3-qt5

Hope this helps Today I found the solution. The steps below worked for me, without any error. The whole process took almost two hours.

sudo apt-get update
sudo apt-get install qt5-default
sudo apt-get install sip-dev

cd /usr/src
sudo wget https://www.riverbankcomputing.com/static/Downloads/sip/sip-4.19.14.tar.gz
sudo tar xzf sip-4.19.14.tar.gz
cd sip-4.19.14
sudo python3.6 configure.py --sip-module PyQt5.sip
sudo make
sudo make install

cd /usr/src
sudo wget https://www.riverbankcomputing.com/static/Downloads/PyQt5/PyQt5_gpl-5.12.tar.gz
sudo tar xzf PyQt5_gpl-5.12.tar.gz
cd PyQt5_gpl-5.12
sudo python3.6 configure.py
sudo make
sudo make install