Python Forum

Hi, I have 2 classes and I want a method which is in the the 2nd class ('class2_method') to be able to access a class variable from the first class. However I need 'class2_method' to be  run from a method in the first class('class1_method').

The following code works ok,  'class1_var1' is changed from "test" to "test2" using 'class2_method'.

class class1():
    def class1_method(self):
        self.class1_var1 = "test"
        self.class2_init = class2()
        self.class2_init.class2_method()
    
class class2():
    def class2_method(self):
        test.class1_var1 = "test2"
        print test.class1_var1

test = class1()
test.class1_method()

However, if I save the two classes as a module file('class_tests).  And then try to do the same thing as before like this:

class class1():
    def class1_method(self):
        self.class1_var1 = "test"
        self.class2_init = class2()
        self.class2_init.class2_method()
    
class class2():
    def class2_method(self):
        test.class1_var1 = "test2"
        print test.class1_var1

import class_tests
reload(class_tests)
test = class_tests.class1()
test.class1_method()

I get this error:

"class2 instance has no attribute 'test' "

Please can anyone tell me what I am doing wrong?  Thanks.

What is the purpose of saving the file and running a reload?
I don't see any reason for doing that.
What are you using as an IDE? is it's IDLE, if so,
I have seen strange behavior (several years ago) when loading
modules whose name begins with test from IDLE.

(May-18-2017, 12:04 PM)cybercreature Wrote: [ -> ]Hi, I have 2 classes and I want a method which is in the the 2nd class ('class2_method') to be able to access a class variable from the first class. However I need 'class2_method' to be  run from a method in the first class('class1_method').

There must be a problem with your design if you must do that.