global variables in python

Cam · 2005-06-26 08:43:17

I used to do some web development in PHP and it was always a general rule that global variables were bad. This was in an environment that has a lot of data coming from an outside source etc. In a Python script I'm working on at the moment I've got a few objects which all need access to the same 3 tuples. I realise I could pass them to each of the objects for use without many dramas but are globals still evil? It's a simple script that uses Evas to draw some stuff and the only outside data coming into play will be from MPD, should I be concerned and pass the variables or is the easy way out okay here?

Thanks for any opinions on this

sweiss · 2005-06-26 08:57:22

I think global variables are said bad for the coder himself. If you could deal with it then it's alright. What I would do if I were you is creating a class with the tuples as its members, and then passing an object of that class to the objects.

Maybe that's a prettier way of doing what you wish.

cactus · 2005-06-26 09:05:37

As long as you make sure you don't have any race conditions involving the global, and you aren't cluttering up your namespace needlessly, I don't see why it would be a problem.

Now, 'register globals'..that is the php evil, and might be what you were thinking of.

Cam · 2005-06-26 10:28:16

sweiss wrote:

I think global variables are said bad for the coder himself. If you could deal with it then it's alright. What I would do if I were you is creating a class with the tuples as its members, and then passing an object of that class to the objects.
Maybe that's a prettier way of doing what you wish.

Yeah that's not bad actually, I just didn't really want to pass the exact same 3 objects around which looks cluttered but one isn't so bad

phrakture · 2005-06-27 14:54:15

make a "config" class which has the tuples as members... I can't recall how you make a a class "static" though...

Dusty · 2005-06-27 14:56:48

Hehehe!! This is Python, not OOP!!!

IIRC, you don't make static classes in Python. You use modules! Python is Way Cooler than OOP.

(Diehard Java Programmer here, eh?)

Dusty

xerxes2 · 2005-06-27 20:49:27

use the globals cam,
just make sure that the names are long and ugly,

phrakture · 2005-06-27 21:11:51

hahah, nice signature!
the phrakWM team is still considers the code pre-alpha (and I actually just removed a big chunck to redesign it)

Dusty · 2005-06-27 21:46:40

Don't leave me out. I am the unofficial head of finding a decent name for phrakWM. I think I deserve voting privleges!

Dusty

xerxes2 · 2005-06-27 21:50:29

phrakture wrote:

hahah, nice signature!
the phrakWM team is still considers the code pre-alpha (and I actually just removed a big chunck to redesign it)

just take your time phrakture, compared to the speed of which enlightenment is developed you probably are faster,

phrakture · 2005-06-27 21:51:41

I seriously debated "phrik" for a while, just because it sounded nifty...

oh and, by the way, HIJACK!

Dusty · 2005-06-27 21:54:47

my name is not Jack!

Cam · 2005-06-27 23:33:51

Oi phrik is pretty cool, vote++

cactus · 2005-06-28 00:25:20

I think you should call it "hijack"

phrakture · 2005-06-28 15:44:07

or cacti

Dusty · 2005-06-28 15:49:26

maybe cactiph.

The window manager with a lisp.

Only, it plays on three prominent names here -- cactus, phrakture, and iphitus. So that's cool.

Phrames?
Phrodo?
Phink?

Jingo?
Ridcully?
Vetinari?
Atuan?

cactus · 2005-06-28 16:15:23

Jigalo
NotEnsmer
BitHatWm
I-am-in-charge-wm
Dance of a thousand orangutans.

Dusty · 2005-06-28 16:17:14

Whatever else, it should NOT(!!!) have wm in the title.

Dusty

phrakture · 2005-06-28 16:25:07

iPhusty? sounds like something made by apple

cactus · 2005-06-28 18:54:49

iPhusty...
iPhustyWM.

:twisted:

Dusty · 2005-06-28 19:35:08

Cactus, what is it you have against me?

xerxes2 · 2005-06-28 19:43:34

what's wrong with phrakwm?
or maybe phrak with a number like phrak42 or something,

cactus · 2005-06-28 23:03:23

Dusty wrote:

Cactus, what is it you have against me?

?
Nothing. Apparently I once again failed at being midly humerous.
*sigh*

Arch Linux

#1 2005-06-26 08:43:17

global variables in python

#2 2005-06-26 08:57:22

Re: global variables in python

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