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# numpy.random.ranf

`numpy.random.``ranf`(size=None)

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

  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 Defines the shape of the returned array of random floats. If None (the default), returns a single float.
  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()
      0.47108547995356098
      >>> type(np.random.random_sample())
      <type 'float'>
      >>> np.random.random_sample((5,))
      array([ 0.30220482,  0.86820401,  0.1654503 ,  0.11659149,  0.54323428])

  Three-by-two array of random numbers from [-5, 0):

      >>> 5 * np.random.random_sample((3, 2)) - 5
      array([[-3.99149989, -0.52338984],
             [-2.99091858, -0.79479508],
             [-1.23204345, -1.75224494]])

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