:mod:`random`
=============

.. py:module:: random

.. autoapi-nested-parse::

   pseudo-random numbers and choices

   The `random` module is a strict subset of the CPython `cpython:random`
   module. So, code written in CircuitPython will work in CPython but not
   necessarily the other way around.

   Like its CPython cousin, CircuitPython's random seeds itself on first use
   with a true random from os.urandom() when available or the uptime otherwise.
   Once seeded, it will be deterministic, which is why its bad for cryptography.

   .. warning:: Numbers from this module are not cryptographically strong! Use
     bytes from `os.urandom` directly for true randomness.



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.. py:data:: _T
   

   

.. py:function:: seed(seed: int) -> None

   Sets the starting seed of the random  number generation. Further calls to
   `random` will return deterministic results afterwards.


.. py:function:: getrandbits(k: int) -> int

   Returns an integer with *k* random bits.


.. py:function:: randrange(stop: Tuple[int, int, int]) -> int

   Returns a randomly selected integer from ``range(start, stop, step)``.


.. py:function:: randint(a: int, b: int) -> int

   Returns a randomly selected integer between a and b inclusive. Equivalent
   to ``randrange(a, b + 1, 1)``


.. py:function:: choice(seq: Sequence[_T]) -> _T

   Returns a randomly selected element from the given sequence. Raises
   IndexError when the sequence is empty.


.. py:function:: random() -> float

   Returns a random float between 0 and 1.0.


.. py:function:: uniform(a: float, b: float) -> float

   Returns a random float between a and b. It may or may not be inclusive
   depending on float rounding.