looking fo documentation for module files

[Skaperen]

i've never changed any file with either of those names. since you did not say where/how they are found by the engine, i ran a full system-wide search in root. i only found "/etc/python3.8/sitecustomize.py" for the first one:

Output:
lt1a/forums/1 /home/forums 9> ls --full-time /etc/python3.8/sitecustomize.py
-rw-r--r-- 1 root root 155 2020-03-13 06:14:16.000000000 -0400 /etc/python3.8/sitecustomize.py
lt1a/forums/1 /home/forums 10> box /etc/python3.8/sitecustomize.py
+----</etc/python3.8/sitecustomize.py>----------------+
| # install the apport exception handler if available |
| try:                                                |
|     import apport_python_hook                       |
| except ImportError:                                 |
|     pass                                            |
| else:                                               |
|     apport_python_hook.install()                    |
+-----------------------------------------------------+
lt1a/forums/1 /home/forums 11> 

for "usercustomize.py" i found 3 files in a 7 year old backup from 2015.

Output:
rw-r--r-- 1 phil phil   5 2015-04-19 06:43:05.564927659 -0400 /home/black/u2/forums/.local/lib/python2.7/dist-packages/usercustomize.py
-rw-r--r-- 1 phil phil 151 2015-04-19 06:43:47.964926793 -0400 /home/black/u2/forums/.local/lib/python2.7/dist-packages/usercustomize.pyc
-rw-r--r-- 1 phil phil   5 2015-04-19 06:42:51.972927936 -0400 /home/black/u2/forums/.local/lib/python3.4/dist-packages/usercustomize.py

the contents of the 2 smaller .py files is "pass\n". so both of these appear to be benign. i have never coded "site.PREFIXES" anywhere i know of.