python shell scripting 4

Step 1 command: sudo gedit hello

File Name: hello
hello world example:
#!/bin/bash
#
python hello.py

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Step 2 command: sudo gedit hello.py

File Name: hello.py
hello world example in python:
#! /usr/local/bin/python
import os
if os.environ['USER']:
print 'Hello, '+os.environ['USER']

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shell command to run program:
cd /home/user/scripts

shell Prompt: command:
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user@youhomecomputer:~/scripts$ ./hello