A QR code reader (via image, not camera access although adding that would be trivial) and generator using Kivy as the GUI and qrcode, cv2, zbar, and matplotlib for the functionality.
Short video showing GUI and QR generation/reading: https://www.youtube.com/watch?v=ObYswYk39EA
Requirements:
- Python 3.x
- Kivy (https://kivy.org/#download)
- qrcode (https://pypi.org/project/qrcode)
- cv2 (https://pypi.org/project/opencv-python)
- zbar (https://pypi.org/project/zbar-py)
- matplotlib (https://pypi.org/project/matplotlib)
Once the requirements are installed simply either clone the repo or download and extract the zip and execute qr-gen.py.