Global modules across the files in python

Question

Any one help me how to declare global variables across the python files

In Below python file i have declared the global variable var1:

 File locations for settings.py:
/usr/lib/python2.7/site-packages/project/settings.py

settings.py

global var1
var1 = ""

python file2.py:

 Location:
/usr/lib/python2.7/site-packages/file2.py

file2.py

from dev import fullchip
from project import settings
a = 10
b = 20
fullchip.count (a, b)
print var1

script fullchip.py

 location
 /usr/lib/python2.7/site-packages/dev/fullchip.py

script fullchip.py

 from projects import settings
 def count(a, b):
     global var
     var1 = a + b

I am running file2.py

I am expecting var1 to print "30" but i am getting var1 not defined. Basically I want to use var1 as global variables across all the files

possible duplicate of http://stackoverflow.com/questions/13034496/using-global-variables-between-files — bigbounty, May 08 '17 at 08:54
@asteroid4u Also your code in fullchip.py reads `global var` shouldn't it be `global var1`? — moritzg, May 08 '17 at 08:55
@bigbounty, I gone through your link before posting this question but still i am having issue — asteroid4u, May 08 '17 at 08:56
@yeniv, Tried print settings.var1 in file2.py but now nothing is printing but error var1 not coming. might be it is pulling from settings.py directly since settings.py value is empty — asteroid4u, May 08 '17 at 09:05
Use it in similar manner in fullchip.py also where the `var1` value has to be updated. — yeniv, May 08 '17 at 09:09
when i used same in fullchip. I am getting variable not defined error — asteroid4u, May 08 '17 at 12:07
@yeniv, Thanks it works sorry in above comment mentioned wrong comment.. — asteroid4u, May 08 '17 at 15:57

score 1 · Accepted Answer · answered May 08 '17 at 17:50

Question: I am expecting var1 to print "20" but i am getting var1 not define

This works for me, no global required:

from dev import fullchip
from project import settings

a = 10
b = 20
fullchip.count (a, b)
print(settings.var1)

Output

1 Answers1