I checked
What can I assume if a publicly published project has no license?
Is my code FLOSS just because it is published it on GitHub?
Open source code with no license… can I fork it?
and other question on this website but haven't found what I am searching.
I want to use a program on github licensed under GPL3.0. It's a python wrapper around a C software. The original C software is from an academic competition and neither the archive released on github or the associated paper mention a License.
The website of the project doesn't mention a License neither.
And the python wrapper has the following sentence in the README:
This package is a unofficial package using cython for calling the official implementation in C source code.
enforcing the idea that no explicit authorization were given to the author of the wrapper, which was made later, compared to the R wrapper mentioned on the website.
From what I saw on others questions, if I want to use the original C code, I need the permission of the original author, who I can mail.
However, would this authorization extend to the use of the code inside the python wrapper? Can I use the python wrapper code without worrying about the lack of license in the original code (I mean legally, not ethically)?