Search notes:

PEP 3116 - New I/O

Any object that provides read() or write() is a stream-like object.

This PEP addresses useful ("exotic") functions like readline() or seek() (which may or may not be available in a stream-like object).

The new I/O spec is intended to be similar ot the Java I/O libraries.

There are three I/O layers, each of which as an abstract base class:

Methods and properties

Methods that I/O classes may provide seem to include:

`close()`
`closed`
`fileno()`	Only descendants of `io.RawIOBase`
`flush()`
`isatty()`
`readable`
`readline()`
`readlines()`
`seek()`
`seekable`
`tell()`
`truncate()`
`writable`
`writelines()`

In addition, there is also __enter__ and __exit__, __iter__ and __next__, and other dunder functions.