global vars across modules

[Kiuhnm]

On 4/22/2012 21:39, mamboknave at gmail.com wrote:
> I need to use global var across files/modules:
>
> # file_1.py
> a = 0
> def funct_1() :
>      a = 1	# a is global
>      print(a)
>
>
> # file_2.py
> from file_1 import *
> def main() :
> 	funct_1()
> 	a = 2	# a is local, it's not imported
> 	print(a)

You just forgot to declare 'a' as global inside your functions.

# file_1.py
a = 0
def funct_1() :
     global a
     a = 1	# a is global
     print(a)


# file_2.py
from file_1 import *
def main() :
     global a
     funct_1()
     a = 2       # a is global
     print(a)

When you write 'a = 1' and 'a = 2' you create local variables named 'a' 
local to your functions, unless you specify that you're referring to a 
global variable by declaring 'a' as 'global'.

Kiuhnm