I wrote a Python script which writes its output into a txt file.
Then I included that file in my html/php website. - works good so far.
Only remaining problem: I can't execute the .py file automatically while opening the site.
I know that this isn't the best solution
<?PHP exec("python3 Auswertung.py"); ?> doesn't seem to work
I used the commands chown -R www-data:www-data <directory> and chmod -R 755 <directory>. I'm not sure which command solved my problem, but at least its working.
executing .py in html/php