type hinting causes warning

[arrrrrmin]

def get(self, key: str) -> str:
    """get the contents of the given key"""
    selected_key = self.key(key)
    return selected_key.get()

bucket = bucketstore.get(Config().bucket)
content = bucket.get('folder/fileName.txt')
# b"Hello I'm your file 'folder/fileName.txt' content."
content.decode('utf-8') # is possible
content.encode('utf-8') # is not possible

This might be a bit confusing when trying to encode/decode a string/bytes.
Sorry for beeing nit picky or if i missed something.

PS: Awesome repo 👍 😃