I have a Class A in Python and I would like to populate the a static variable calling a static method like:

```
Class A:
   arr = []

   @staticmethod
   def FillArr():
       #do more stuff but for semplicity...
       A.arr = [[2,2,2,]]

  FillArr.__func__()

```

when I run the code I got 'NameError: name A not defined' so essentially I can't initialize the arr static variable. Essentially once the the class has been instantiated once I would like to populate the static variable