copy broken by 2.4.0

[bmerry]

This code used to work (up to 2.3.0), but raises an error in 2.4.0:

#!/usr/bin/env python3

from addict import Dict

a = Dict().copy()
a.foo.bar

Output:

Traceback (most recent call last):
  File "copy-broken.py", line 6, in <module>
    a.foo.bar
  File "/home/bmerry/work/sdp/env3/lib/python3.8/site-packages/addict/addict.py", line 67, in __getattr__
    return self.__getitem__(item)
  File "/home/bmerry/work/sdp/env3/lib/python3.8/site-packages/addict/addict.py", line 70, in __missing__
    if object.__getattribute__(self, '__frozen'):
AttributeError: 'Dict' object has no attribute '__frozen'

[henvu50]

I'm encountering this problem as well, from Ren'py, a visual novel design software.

init python:
    def test1():
        # When I click the first button that fires this function, the height value is set successfully.
        addict_dict.henry.height = "tall"

    def test2():
        # When I click the second button that fires this function, I get an error:
        # AttributeError: 'Dict' object has no attribute '__frozen'
       addict_dict.bob.height = "super tall"
       # if I do this 

error:

addict_dict.bob.height = "super tall"
  File "python-packages/addict/addict.py", line 67, in __getattr__
  File "python-packages/addict/addict.py", line 70, in __missing__
AttributeError: 'Dict' object has no attribute '__frozen'

RESOLUTION: The only way I figured out how to fix this is installing addict version 2.30 via pip, like this:

pip install --target game/python-packages addict==2.3.0
... or like this if you don't want it to go to a certain subdir:
pip install addict==2.3.0

In this link: https://github.com/mewwts/addict/releases/tag/v2.4.0 , it looks like a new feature was added in 2.4.0. Are we supposed to unfreeze our addict_dictionary before using it, would that make the above problem go away?