"extern variable" in PYTHON:

[balachandra]

I have a file fileA.py where my students input some data and fill in a certain portion of the code. There are a few functions they call from a module, fileB.py inside the file fileA.py. When they are calling functions, I do not want them to pass data as arguments , since that would confuse them a lot (they are 9th grade students). So, I want to make the data of fileA.py available to fileB.py. I cannot use

from __fileA__ import *

because, that will be a recursive call. I have already used it in fileA.py. So, I need a way out of this, where I can use variable defined in fileA.py to be used by fileB.py. I had an idea of creating a bypass.py such that

fileA calls functions from fileB.

Functions in fileB call functions from bypass.py

bypass.py accesses fileA.py and returns to fileB.py.

So, the recursion is kind of avoided.

[bvdet]

You could do something like this:

# FileA.py

import FileB

a = 12
b = 24
c = 24

for attr in ('a', 'b', 'c'):
    setattr(FileB, attr, eval(attr))

result = FileB.f()

[dwblas]

They should be able to understand writing the data to a file and closing the file. The function in fileB would open and read the file. Also, you can use a class attribute, but that is possibly beyond them as well.

## file classC.py
class Class_C:
   test_string = "abc"
   test_number = 1

## fileA
import classC
import fileB

print classC.Class_C.test_string
classC.Class_C.test_number = 2
fileB.print_number()

## fileB
import classC

def print_number():
    print "inside fileB", classC.Class_C.test_number