Python Basics part -1 - Hello world

How to create a hello world script using python.
http://FilmsByKris.com

Category:

Howto & Style

Tags:

• python
• script
• code
• linux
• programming
• hello
• world
• tutorial

[cqcboy100]

hey, im having trouble trying to run the python script and the part were i get stuck at is after using vim and closing it i do chmod +x mypython.py but it goes to the next line and does nothing? got ideas?

[metalx1000]

@cqcboy100: That command shouldn't have and output if it runs properly. It just changes the permissions of your script to make is executable. After you do that, and you only have to do it once, then you would run your script like this:

./mypython.py

the is a dot slash sriptname

[elnegrobembon]

so if the "#" sign is used for commenting, why do you put "!/usr/bin/python" behind a "#"??

isn't it supposed to ignore that line??

[metalx1000]

@elnegrobembon: The first line of any script in a Unix like environment (Linux, Mac OS, etc...) tells the system what type of script it is. So, in a way it is a comment. That line is not run and not really part of the code. You could leave it out and the script will work fine, just instead of running the script like this:

./script.py

you would have to run it like this:

python script.py

It's just more proper to have it.

[elnegrobembon]

@metalx1000

ahhh i see.. so it ignores everything behind the # except for in the first line where you set the environment??

and it's basically just saying to run that script using python program right?

i think i got it...

i appreciate the response man... youre a good teacher too..  thanx a lot for these vids.

[metalx1000]

@elnegrobembon: Right, if you where righting a BASH script, the first line would be:

#!/bin/bash

If it was a perl script it would be:

#!/usr/bin/perl

Basically telling the system where the interpreter is.

This line is called the "Shebang"

[SoSlipknot]

@tontoF12 I disagree zsh rules, zsh can be used as an irc client :P

[cqcboy100]

@cqcboy100 also im new to vim so im trying to follow your commands so im not sure if i save it or not

[tontoF12]

Thanks man!

Python % bash rulz! ;)