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bundles / numpy latest / numpy / random / RandomState / random_sample

cython_function_or_method

numpy.random:RandomState.random_sample

Signature

def   random_sample ( size = None )

Summary

Return random floats in the half-open interval [0.0, 1.0).

Extended Summary

Results are from the "continuous uniform" distribution over the stated interval. To sample multiply the output of random_sample by (b-a) and add a: 

(b - a) * random_sample() + a

Parameters

size : int or tuple of ints, optional

Output shape. If the given shape is, e.g., (m, n, k), then m * n * k samples are drawn. Default is None, in which case a single value is returned.

Returns

out : float or ndarray of floats

Array of random floats of shape size (unless size=None, in which case a single float is returned).

Examples

np.random.random_sample()
✗
type(np.random.random_sample())
✓
np.random.random_sample((5,))
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Three-by-two array of random numbers from [-5, 0): 
5 * np.random.random_sample((3, 2)) - 5
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See also

random.Generator.random

which should be used for new code.

Aliases

  • numpy.random.random_sample
  • numpy.random.RandomState.random_sample