Question

This is clearly a scope or import issue of some kind, but I can’t figure it out. Something like:

classes.py

class Thing(object):

    @property
    def global_test(self):
        return the_global

And then…

test.py

from classes import Thing

global the_global
the_global = 'foobar'

t = Thing()
t.global_test

🙁

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "classes.py", line 4, in global_test
    return the_global
NameError: global name 'the_global' is not defined

Any help would be great!

Answer 1

“global” in Python is a variable accessible in top level within module.

This message:

NameError: global name 'the_global' is not defined

raised within classes.py means you do not have a global named the_global within your classes.py file.

Python modules do not share global variables. (well, not in the way you want them to share)