btw the `./` u don't have to do for anything inside a PATH folder, bash does it automatically. if u type `echo $PATH` u can see all of the PATH folders separated by colons. u can add a folder to it too if u have scripts that u use all the time then u can run them from anywhere
so if u have a script called `myscript.py` and do the `chmod +x` thing, put it in a folder, and put `export PATH=$PATH:/path/to/folder` then u can just type `myscript.py` from anywhere
the point of the `./` is to distinguish programs in PATH from programs in current directory
bc `.` means current directory