DynamoDB's Binary type issues with Python 3

The Binary class has a problematic implementation of the __str__() method that assumes str and bytes are interchangeable. Example:

Python 3.5.2 (default, Sep 28 2016, 18:11:34)
>>> from boto3.dynamodb.types import Binary
>>> b = Binary(b'hello')

>>> b
Binary(b'hello')

>>> print(b)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: __str__ returned non-string (type bytes)

>>> bytes(b)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'Binary' object is not iterable

The above examples all succeed under Python 2.7.

[mhball]

I encountered this issue also. Found I could work around it by accessing the value directly. E.g.

Python 3.5.2 (default, Nov 12 2018, 13:43:14)
>>> from boto3.dynamodb.types import Binary
>>> b = Binary(b'hello')
>>> b
Binary(b'hello')

>>> print(b.value)
b'hello'

>>> print(b.value.decode("utf-8"))
hello

[scribu]

Why is this marked as feature-request? It’s a bug that happens in Python3.

Also, why is the Binary wrapper class needed at all?