之间的差异`编解码器.StreamReader`以及`io.TEXTIO包装器`

codecs.StreamReader 和 io.TextIOWrapper 在二进制流上?

#!/usr/bin/env python3

import codecs
import io

stream = io.BytesIO(b'abc')
#reader = codecs.getreader('utf-8')(stream)
reader = io.TextIOWrapper(stream)
print(reader, reader.read())