Using variable from a class in another .py script

[keegan_010]

Hi, I am trying to get a variable that I set in a class into another .py file. A snippet of the code below:

class Ui_MainWindow(object): #this is the class of the first file, there is more stuff in here on the actual file
    def payment(self):
        self.testvar = "test"

I am trying to get the variable testvar in another python file. I am not good with classes so I am not sure if this is possible.
Thanks in advance.

[SheeppOSU]

You can import the class into a python file like this from [Name of Python File] import [Name Of Class] as [Variable Nickname for class] if they're in the same directory or the one being imported is in the Python Library directory thing. Then you can use the class as if it were in that Python file.

[keegan_010]

You can import the class into a python file like this from [Name of Python File] import [Name Of Class] as [Variable Nickname for class] if they're in the same directory or the one being imported is in the Python Library directory thing. Then you can use the class as if it were in that Python file.

Hi, I have tried the follwing:

from application import Ui_MainWindow as mw

print(mw.payment.testvar)

and

from application import Ui_MainWindow as mw

print (mw.payment(testvar))

but it says for the first one AttributeError: 'function' object has no attribute 'testvar' and for the second one NameError: name 'testvar' is not defined am I doing it wrong?

[SheeppOSU]

What you are importing is more a model of the class. Think of it as blueprints, you can't actually interact with it. You have to make something to interact with from the blueprints.

from application import Ui_MainWindow as mw
 
newClass = mw("[Put any initiative parameters in here]") #Makes the class from the "Blueprints"

Also, payment is simply a function that defines the variable, so instead do this

newClass.payment() #Execute function
print(newClass.testvar)#Print the variable

[keegan_010]

Ok thanks for the help, I understand now.