I like the 100% philosophy for coding:

1. 100% code coverage 2. 100% branch coverage 3. 100% lint (without noqa) 4. 100% type check pass(for python/js) 5. 100% documentation coverage 6. All functions with complexity less than 5. All functions with no of lines less than 70. All files with number of lines less than 1000.

These make code high quality, and quality of life is directly proportional to qualify of your code.