Module « numpy.random »

Classe « Generator »

Informations générales

Héritage

builtins.object
    Generator

Définition

class Generator(builtins.object):

Description _{[extrait de Generator.__doc__]}

    Generator(bit_generator)

    Container for the BitGenerators.

    ``Generator`` exposes a number of methods for generating random
    numbers drawn from a variety of probability distributions. In addition to
    the distribution-specific arguments, each method takes a keyword argument
    `size` that defaults to ``None``. If `size` is ``None``, then a single
    value is generated and returned. If `size` is an integer, then a 1-D
    array filled with generated values is returned. If `size` is a tuple,
    then an array with that shape is filled and returned.

    The function :func:`numpy.random.default_rng` will instantiate
    a `Generator` with numpy's default `BitGenerator`.

    **No Compatibility Guarantee**

    ``Generator`` does not provide a version compatibility guarantee. In
    particular, as better algorithms evolve the bit stream may change.

    Parameters
    ----------
    bit_generator : BitGenerator
        BitGenerator to use as the core generator.

    Notes
    -----
    The Python stdlib module `random` contains pseudo-random number generator
    with a number of methods that are similar to the ones available in
    ``Generator``. It uses Mersenne Twister, and this bit generator can
    be accessed using ``MT19937``. ``Generator``, besides being
    NumPy-aware, has the advantage that it provides a much larger number
    of probability distributions to choose from.

    Examples
    --------
    >>> from numpy.random import Generator, PCG64
    >>> rg = Generator(PCG64())
    >>> rg.standard_normal()
    -0.203  # random

    See Also
    --------
    default_rng : Recommended constructor for `Generator`.
    

Constructeur(s)

Signature du constructeur	Description
__new__(*args, **kwargs)	Create and return a new object. See help(type) for accurate signature. [extrait de __new__.__doc__]
__init__(self, /, *args, **kwargs)	Initialize self. See help(type(self)) for accurate signature. [extrait de __init__.__doc__]

Liste des opérateurs

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Méthodes héritées de la classe object

__delattr__, __dir__, __format__, __getattribute__, __hash__, __init_subclass__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__