Test run order in python unittest?

Question

Python

Hello, I can't understand the order of launching files with tests:
-there is a structure like this:

Launch command: python -m unittest discover -s "." -p "*.py"
Why is the test A10_MATA030 run first, A9_MATA020 is the last to run. Accordingly, the last A11 does not work at all, what's the problem?

Answer 1

The problem is solved, the system compares file names in its own way. In this case, A1_ is compared with A10_. We get:

[A] [1] [0] [_]
 |   |   |   |
[A] [1] [_] [None]

I think so, if we look at the representation of the characters "0" and "_" from the file name:
ord (0) == 48
ord (_) == 95
We get that the file name that contains the character "0" - >(A10) in the same digit where A1 has "_" ->(A1_) is higher in priority, respectively A1_ is lower than A10_. The solution to the problem is renaming [A1_] -> [A01_]