Move library code out of inner directory

[kattni]

From Dave Astels:
There's something wrong with the adafruit_itertools build/packaging. Using the source from GitHub works, but the dir/mpy in the bundle doesn't... it just imports empty.

Please see https://forums.adafruit.com/viewtopic.php?f=65&t=191711

From Kattni:
I tried importing islice using the GitHub source code, and it failed. I see it in the file, it exists, but it's not importing evidently. Dave originally included running dir(adafruit_itertools) from the REPL as proof that it was importing empty, but even the GitHub source code only shows ['__class__', '__name__', '__file__', '__path__']. I am unsure whether it is supposed to show more.

[kattni]

Turns out the import structure for IterTools is import adafruit_itertools.adafruit_itertools. Thank you to Neradoc on Discord for catching this.

>>> import adafruit_itertools.adafruit_itertools
>>> dir(adafruit_itertools.adafruit_itertools)
['__class__', '__name__', 'count', '__file__', '__version__', 'chain', 'compress', '__repo__', 'accumulate', 'chain_from_iterable', 'combinations', 'combinations_with_replacement', 'cycle', 'dropwhile', 'filterfalse', 'groupby', 'islice', 'permutations', 'product', 'repeat', 'starmap', 'takewhile', 'tee', 'zip_longest']
>>>

[caternuson]

Is this just import syntax confusion? The folder is the same name as one of the modules.

Don't import the folder:

Adafruit CircuitPython 7.3.0 on 2022-05-23; Adafruit CLUE nRF52840 Express with nRF52840
>>> import adafruit_itertools
>>> dir(adafruit_itertools)
['__class__', '__name__', '__file__', '__path__']
>>> 

import the module:

Adafruit CircuitPython 7.3.0 on 2022-05-23; Adafruit CLUE nRF52840 Express with nRF52840
>>> from adafruit_itertools import adafruit_itertools
>>> dir(adafruit_itertools)
['__class__', '__name__', 'count', '__file__', '__version__', 'chain', 'compress', '__repo__', 'accumulate', 'chain_from_iterable', 'combinations', 'combinations_with_replacement', 'cycle', 'dropwhile', 'filterfalse', 'groupby', 'islice', 'permutations', 'product', 'repeat', 'starmap', 'takewhile', 'tee', 'zip_longest']
>>>  

EDIT: oops. nvm. looks like that's already been found.

[dhalbert]

I believe this is basically a bug. In CPython, regular itertools functionality is not two levels down.

Python 3.10.4 (main, Apr  2 2022, 09:04:19) [GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import itertools
>>> dir(itertools)
['__doc__', '__loader__', '__name__', '__package__', '__spec__', '_grouper', '_tee', '_tee_dataobject', 'accumulate', 'chain', 'combinations', 'combinations_with_replacement', 'compress', 'count', 'cycle', 'dropwhile', 'filterfalse', 'groupby', 'islice', 'pairwise', 'permutations', 'product', 'repeat', 'starmap', 'takewhile', 'tee', 'zip_longest']

[dhalbert]

The inner directory should be removed. Reopening.