Use of global variables from several modules.

[Jstechg]

I am writting a python program that uses several modules.

In "file_1.py" the global variables "i1" and "s1" are declared. In addition, in this module the "Initialization" function is defined, that modifies the value of these variables.

In "file_2.py" the "show_vars" function is defined, which shows the value of "i1" and "s1".

In "file_3.py" the initial value of "i1" and "s1" is shown, "Initialization" is called, their value is displayed again and "show_vars" is called.

Attached at the end of this message the source code of these modules.

The output I expected to get when executing "python file_3.py" is as follows:

file_1.py: i1 = 1, s1 = 1.1.1.1
file_2.py: i1 = 1, s1 = 1.1.1.1
file_3.py STEP 1: i1 = 1, s1 = 1.1.1.1
file_3.py STEP 2: We are going to initialize the global vars.
file_1.py Initialization(): i1 = 10, s1 = 10.10.10.10
file_3.py STEP 3: i1 = 10, s1 = 10.10.10.10
file_3.py STEP 4: Call show_vars() to print the global vars value.
file_2.py show_vars(): i1 = 10, s1 = 10.10.10.10

But the output I get is really:

file_1.py: i1 = 1, s1 = 1.1.1.1
file_2.py: i1 = 1, s1 = 1.1.1.1
file_3.py STEP 1: i1 = 1, s1 = 1.1.1.1
file_3.py STEP 2: We are going to initialize the global vars.
file_1.py Initialization(): i1 = 10, s1 = 10.10.10.10
file_3.py STEP 3: i1 = 1, s1 = 1.1.1.1
file_3.py STEP 4: Call show_vars() to print the global vars value.
file_2.py show_vars(): i1 = 1, s1 = 1.1.1.1


This means that the changes made by the "Initialization()" function, defined in "file_1.py", are not reflected
in the value of the global variables that are seen by "file_2.py" and "file_3.py"

What am I doing wrong? How can I get the expected result?

The source code of these modules is:


file_1.py :
-----------

i1 = 1;
s1 = "1.1.1.1";

print ("file_1.py: i1 = " + str(i1) + ", s1 = " + str(s1))


def Initialization() :
  global i1
  global s1

  i1 = 10
  s1 = "10.10.10.10"

  print ("file_1.py  Initialization(): i1 = " + str(i1) + ", s1 = " + str(s1))

  return()

file_2.py :
-----------

from file_1 import *

print ("file_2.py: i1 = " + str(i1) + ", s1 = " + str(s1))


def show_vars() :
  global i1
  global s1

  print ("file_2.py  show_vars(): i1 = " + str(i1) + ", s1 = " + str(s1))

  return ()

file_3.py :
-----------

from file_1 import *
from file_2 import *

print ("file_3.py  STEP 1: i1 = " + str(i1) + ", s1 = " + str(s1))

print ("file_3.py  STEP 2: We are going to initialize the global vars.")
Initialization()

print ("file_3.py  STEP 3: i1 = " + str(i1) + ", s1 = " + str(s1))


print ("file_3.py  STEP 4: Call show_vars() to print the global vars value.")
show_vars()