Generate QR code

Question

How I can generate QR code in python without using the qrcode library?

Answer 1

Thanks a lot Lothar and JaScript

Answer 2

Without using any library it is very difficult. First of all you need to get familiar with the spcification / standard from ISO Organization:
ISO/IEC 18004:2015:
Information technology — Automatic identification and data capture techniques — QR Code bar code symbology specification.
These standards are not for free. Even if you will get it from somewhere, it will not show how to do the coding. This requires in-depth knowledge of image processing and pattern recognition.
So why should you re-invent the wheel?

Answer 3

In web you can find the technical definition and code this. Happy coding.
https://en.m.wikipedia.org/wiki/QR-Code