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python-gpiozero/docs/api_tools.rst
2017-07-26 18:34:50 +01:00

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=========================
API - Device Source Tools
=========================
.. module:: gpiozero.tools
GPIO Zero includes several utility routines which are intended to be used with
the :doc:`source_values` attributes common to most devices in the library.
These utility routines are in the ``tools`` module of GPIO Zero and are
typically imported as follows::
from gpiozero.tools import scaled, negated, all_values
Given that :attr:`~gpiozero.SourceMixin.source` and
:attr:`~gpiozero.ValuesMixin.values` deal with infinite iterators, another
excellent source of utilities is the :mod:`itertools` module in the standard
library.
.. warning::
While the devices API is now considered stable and won't change in
backwards incompatible ways, the tools API is *not* yet considered stable.
It is potentially subject to change in future versions. We welcome any
comments from testers!
Single source conversions
=========================
.. autofunction:: absoluted
.. autofunction:: booleanized
.. autofunction:: clamped
.. autofunction:: inverted
.. autofunction:: negated
.. autofunction:: post_delayed
.. autofunction:: post_periodic_filtered
.. autofunction:: pre_delayed
.. autofunction:: pre_periodic_filtered
.. autofunction:: quantized
.. autofunction:: queued
.. autofunction:: smoothed
.. autofunction:: scaled
Combining sources
=================
.. autofunction:: all_values
.. autofunction:: any_values
.. autofunction:: averaged
.. autofunction:: multiplied
.. autofunction:: summed
Artificial sources
==================
.. autofunction:: alternating_values
.. autofunction:: cos_values
.. autofunction:: random_values
.. autofunction:: sin_values