https://docs.python.org/3/library/io.html#class-hierarchy mis-orders the the BufferedIOBase subclasses explanation.

[dougmiller]

Documentation

"Its subclasses, BufferedWriter, BufferedReader, and BufferedRWPair buffer raw binary streams that are readable, writable, and both readable and writable, respectively."

Does this mean that the BufferedWriter is readable, the BufferedReader is writeable?

Surely it should be:

"Its subclasses, BufferedWriter, BufferedReader, and BufferedRWPair buffer raw binary streams that are writable, readable, and both readable** and writable, respectively."