.. _micropython_lib:

MicroPython libraries
=====================

Python standard libraries and micro-libraries
---------------------------------------------

The libraries below are inherited from MicroPython.
They are similar to the standard Python libraries with the same name.
They implement a subset of or a variant of the corresponding
standard Python library.

CircuitPython's long-term goal is that code written in CircuitPython
using Python standard libraries will be runnable on CPython without changes.

These libraries are not enabled on CircuitPython builds with
limited flash memory:
``binascii``, ``errno``, ``json``, ``re``.

These libraries are not currently enabled in any CircuitPython build, but may be in the future:
``ctypes``

.. toctree::
   :maxdepth: 1

   builtins.rst
   heapq.rst
   array.rst
   binascii.rst
   collections.rst
   errno.rst
   gc.rst
   io.rst
   json.rst
   re.rst
   sys.rst
   ctypes.rst
   select.rst

Omitted functions in the ``string`` library
-------------------------------------------

A few string operations are not enabled on small builds
due to limited flash memory:
``string.center()``, ``string.partition()``, ``string.splitlines()``,
``string.reversed()``.