Global variable is not passed through different scripts in python

Question

I have a python script, script_a.py which has a function:

def fun_a(n):
    print (x/n)

I have another python script, script_b.py which does the following

from script_a import fun_a

def fun_b(n):
    fun_a(n)

def main():
    global x
    x=1
    fun_b(1)

When I run script_b.py from the terminal, I get the error that the x variable does not exist in script_a.py

I do not understand why this is happening since I define x to be a global variable

Any ideas ?

EDIT

Adding this piece of code

def main():
    global x
    x=2

in script_a.py also doesnt solve the problem

Using `global` defines a variable to be global ***within the module it is defined*** — Tomerikoo, Jan 28 '21 at 14:04
@Tomerikoo Please see the edit. If that was the case, shouldnt the edit solve it ? — quant, Jan 28 '21 at 14:13
I don't understand that edit. There is no `main` in `script_a`... — Tomerikoo, Jan 28 '21 at 14:14
@Tomerikoo The edit is actually adding a `main` in `script_a` — quant, Jan 28 '21 at 14:15
The most idiomatic way of doing what you want is putting all the shared variables in another module, usually called `settings` or `config` and import it in all files. See the link above and mark this question as a duplicate — Tomerikoo, Jan 28 '21 at 14:16
Then I don't see how that would help as you never call it... — Tomerikoo, Jan 28 '21 at 14:16

score -1 · Answer 1 · answered Jan 28 '21 at 14:05

-1

You should define x outside the function and it will work.

answered Jan 28 '21 at 14:05

Soumajit Ghosh

No, it will not. `x` is not defined in `script_a` – Tomerikoo Jan 28 '21 at 14:06

1 Answers1