Python Cross Module Variables

Question

I realize there are other threads addressing this problem but as I am fairly new to 'Classes' and have already constructed my class structure ... I would like to find a method that I can integrate into my code. I'm sure this will NOT be a difficult one to answer!

First File: NameResult.py

from NameAssign import *

NameList = NameWorks()
print(NameList.InputNames(NameVar))

Second File: NameAssign.py

class NameWorks:
    def __init__(self, NameVar = []):

        self.NameVar = NameVar

    def InputNames(self, NameVar):
        global NameVar
        NameVar = ['harry', 'betty', 'sam']

Result:

NameError: name 'NameVar' is not defined

All replies are much appreciated ...

If Ignacio's answer works for you, you should accept it.

Ethan Furman
– Ethan Furman

2012-01-10 03:06:39 +00:00
Commented Jan 10, 2012 at 3:06 — Ethan Furman
– Ethan Furman, Commented Jan 10, 2012 at 3:06

Ignacio Vazquez-Abrams · Accepted Answer · 2011-02-12 06:08:50Z

4

NameVar is not defined in NameAssign; it only exists within NameAssign.NameWorks.InputNames() as a local variable. The easiest way to fix this is to define it in NameAssign at the global level.

Edit:

It turns out that this is what you want to do:

NameResult.py

import NameAssign

namelist = NameAssign.NameWorks(['harry', 'betty', 'sam'])
print namelist.InputNames()  # or print(...) for Py3k

NameAssign.py

class NameWorks(object):
  def __init__(self, names):
    self.names = names

  def InputNames(self):
    return self.names

edited Feb 12, 2011 at 6:08

answered Feb 12, 2011 at 4:44

Ignacio Vazquez-Abrams

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12 Comments

Rhys Over a year ago

great, where/how do I define it as global. I've tried placing 'global NameVar' all over the place and it just returns: SyntaxError: name 'NameVar' is parameter and global

Ignacio Vazquez-Abrams Over a year ago

Not "as global", at the global level, i.e. at the same level as NameWorks.

Rhys Over a year ago

This might be where the 'I'm new to classes' comes in. Could I have like an line or two of code as an example

Ignacio Vazquez-Abrams Over a year ago

This has nothing to do with classes. NameVar = ['harry', 'betty', 'sam']

Rhys Over a year ago

oh ok. i see. I would like to record three names inside a list variable inside of class: NameWorks and import that list variable into NameResult.py

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