Creating and Running python scripts

You can simply start by creating a file which ends in the extension .py like

vim hello.py

Than just start by entering the print command

print ("Hello, World!")

Than you can execute this file with the python as follows

python hello.py

If you want to make this executable use the # in the linux as follows

#!/bin/python
chmod +x hello.py 

afterwards you can simply execute it like
./hello.py

Now always keep the executables in the bin directory

mkdir bin

mv hello.py bin/hello

This way you can simply make it a command which can directly be executed in the linux terminal and this is how most of the commands actually work in the Linux

You just need to modify the source to match yours , it can be done as follows

source PATH=$PATH:$HOME/bin/