[bug] Attribute error when accessing formatted value in layered config

[billcrook]

Describe the bug
Attribute error when accessing settings value in layered configuration with multiple settings files.

Exception

Traceback (most recent call last):
  File "app.py", line 11, in <module>
    assert settings['s3_url'] == expected_value # fails
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/functional.py", line 17, in inner
    return func(self._wrapped, *args)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/base.py", line 285, in __getitem__
    value = self.get(item, default=empty)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/base.py", line 419, in get
    data = (parent or self.store).get(key, default)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/boxing.py", line 15, in evaluate
    value = f(dynabox, item, *args, **kwargs)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/boxing.py", line 64, in get
    return super(DynaBox, self).get(item, default, *args, **kwargs)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/vendor/box/box.py", line 109, in get
    return B[C]
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/boxing.py", line 23, in evaluate
    return recursively_evaluate_lazy_format(value, settings)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/__init__.py", line 355, in recursively_evaluate_lazy_format
    value = value(settings)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/parse_conf.py", line 176, in __call__
    return self.formatter(self.value, **self.context)
  File "/home/user/dev/venv/lib/python3.7/site-packages/dynaconf/utils/parse_conf.py", line 138, in __call__
    return self.function(value, **context)
AttributeError: 'Settings' object has no attribute 's3_protocol'

To Reproduce
Steps to reproduce the behavior:

1. Having the following folder structure

Project structure

$ ls
.  ..  app.py  conf-test-default.toml  conf-test-layer.toml

2. Having the following config files:

Config files

conf-test-default.toml

s3_protocol = 's3a'
s3_url = '@format {this.s3_protocol}://{this.s3_bucket}'

and

conf-test-layer.toml

s3_bucket = 'kewl_bucket'

3. Having the following app code:

Code

app.py

from dynaconf import Dynaconf

settings_files = ['conf-test-default.toml', 'conf-test-layer.toml']

settings = Dynaconf(settings_files=settings_files)

expected_value = 's3a://kewl_bucket'

assert settings.s3_url == expected_value # succeeds

assert settings['s3_url'] == expected_value # fails

assert settings.get('s3_url', default='s3://default') == expected_values # fails

assert settings('s3_url', cast=str) == expected_value # fails

4. Executing under the following environment

Execution

$ python app.py

Expected behavior
I would expect all documented settings access methods to function properly.

Environment (please complete the following information):

• OS: Linux 5.9.10-arch1-1 Allow separation of projects vars via namespace #1 SMP PREEMPT Sun, 22 Nov 2020 14:16:59 +0000 x86_64 GNU/Linux
• Dynaconf Version 3.1.2

[billcrook]

It seems that accessing via getitem differs from via getattr. Specifically I see that __getattr__ calls recursively_evaluate_lazy_format whereas __getitem__ does not.

[rochacbruno]

I think this issue was solved in #405 I will double check.

[billcrook]

👍