This is simple RPS program using tkinter.
Linux
apt-get install python-tk
or
apt-get install python3-tk
windows
pip install tk
or
pip3 install tk
Linux
pip install Pillow
python -m pip install --upgrade Pillow
or
pip3 install Pillow
python3 -m pip install --upgrade Pillow
windows
pip install Pillow
or
pip3 install Pillow