Qtplot is compatible with both Python 2 and 3. Using the Anaconda Python distribution (https://www.continuum.io/downloads) is recommended to make installing packages like numpy and scipy easier.
Create a new environment:
conda create --name qtplot python=3.5
Install qtplot:
pip install qtplot
Install other dependencies with:
conda install numpy scipy pandas matplotlib pyqt=4
Executables will be generated in the /Scripts folder of your Python environment with the names qtplot.<exe> and qtplot-console.<exe>. Associate one of these with *.dat files for them to be automatically opened in qtplot.