Confused about libbpf-tools：since we have the .py tools, why do we still need libbpf-tools?

Using tools/cpudist.py as an example, there are other files with similar names, such as cpudist.bpf.c, cpudist.c, and cpudist.h. Moreover, nearly all tools have corresponding files with .c, .bpf.c, and .h extensions. At one point, I thought cpudist.bpf.c was directly embedded and executed within cpudist.py. This is quite unfriendly for beginners, as I couldn’t figure out the purpose or significance of the cpudist C source code files.

Start with tools/cpudist.py and compare it with cpudist.bpf.c, cpudist.c, and cpudist.h to determine how the similarly named files relate. Document the purpose of each file and how the Python and C-based tools differ, so a beginner can understand why the files coexist.

Written by the indexing model from the issue text.