Mind Refresher :D

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March 4th, 2004, 01:20 PM

xlordt

Only the strong survives!!.

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Mind Refresher :D

Sorry i kinda been really really busy and i kinda forgot somethings about python

so alittle mind refreshment will help me alot

Code:

#!/usr/sbin/env python

def shows(var1,var2):
    showdata[var1,var2]

    for c in range(len(showdata)):
        print c, showdata[c]
        
shows("hi","ho")

I get an error here & im tring to remember how to fix it

Error---|

Code:

Traceback (most recent call last):
  File "1.py", line 9, in ?
    shows("hi","ho")
  File "1.py", line 4, in shows
    showdata[var1,var2]
NameError: global name 'showdata' is not defined

I kinda forgot python cause i got hired to do some php work for a long time.. but i CANT FORGET ABOUT python so now im back from start kinda still i can refresh my mem

Last edited by xlordt : March 4th, 2004 at 01:24 PM.

March 4th, 2004, 02:41 PM

Grim Archon

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Welcome back

,
I can tell you've spent too much time on other langauges!
I guess you are trying to create a local variable and assign a list to it.
showdata = [var1,var2]
will do the trick

Because of that little buglet the local variable has not been created so the compiler looks in the global scope to find out what showdata might be and can't find it. I suspect it does not even get as far as trying to figure out what
showdata[var1,var2] would compute to

Here is one possibility:

Code:

>>> a = {}
>>> a[1,2]="test"
>>> a
{(1, 2): 'test'}

Where a tuple is the key!

Grim

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March 4th, 2004, 05:08 PM

sfb

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Code:

for c in range(len(showdata)):
        print c, showdata[c]

Also, if you're using Python 2.3, the New Way(tm) of tidying up that range(len(x)) code is the 'enumerate' method, like so:

Code:

for index, value in enumerate(showdata):
    print index, value

March 4th, 2004, 05:59 PM

xlordt

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nice thanx... & ya php/c got my head blowded lol

thanx again

March 5th, 2004, 02:14 AM

percivall

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It might be easier (read: better) to write:

Code:

for index, value in enumerate(showdata):
    print index, value

This will only work if you're using Python 2.3.

March 5th, 2004, 05:23 AM

netytan

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Hi perc, isn't that... exactly what sfb just said

. Look up

Mark.

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March 5th, 2004, 12:13 PM

percivall

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Quote:

Originally Posted by netytan

Hi perc, isn't that... exactly what sfb just said

. Look up

Mark.

*sigh*

March 5th, 2004, 01:10 PM

XxChris

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Quote:

Originally Posted by percivall

It might be easier (read: better) to write:

Code:

for index, value in enumerate(showdata):
    print index, value

This will only work if you're using Python 2.3.

OMG I never knew you could do that! I've been using whiles! Well I guess you learn something new every day

Mind Refresher :D

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