I am having multiple problems with making my pythonscript dartsapp.py executable for my pi.

At first i tried to use

chmod +x dartsapp.py

and

./dartsapp.py

but i got the error:

-bash: ./dartsapp.py: cannot execute: required file not found

I also added the dir to PATH but still no luck. Afterwards i tried to use pyinstaller but when i try to call

pyinstaller --version

i get the same

-bash: pyinstaller: command not found

even though my PATH looks like this:

maxdu@LEDpi:~/0306 $ echo $PATH
/home/maxdu/0306:/home/maxdu/0306/dartsapp.py:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games

What am i missing / doing wrong here?