A module written in C or C++, using Python's C API to interact with the core and

with user code.

:meth:`read()` or :meth:`write()`) to an underlying resource.

Depending on the way it was created, a file object can mediate access

to a real on-disk file or to another other type of storage or

communication device (for example standard input/output, in-memory

buffers, sockets, pipes, etc.). File objects are also called

:dfn:`file-like objects` or :dfn:`streams`.

There are actually three categories of file objects: raw binary

files, buffered binary files and text files. Their interfaces are

defined in the :mod:`io` module. The canonical way to create a

file object is by using the :func:`open` function.