• numpy.zeros(shape, dtype=float, order='C')


    numpy.zeros

    Return a new array of given shape and type, filled with zeros.

    Parameters:

    shape : int or sequence of ints

    Shape of the new array, e.g., (2, 3) or 2.

    dtype : data-type, optional

    The desired data-type for the array, e.g., numpy.int8. Default is numpy.float64.

    order : {‘C’, ‘F’}, optional

    Whether to store multidimensional data in C- or Fortran-contiguous (row- or column-wise) order in memory.

    Returns:

    out : ndarray

    Array of zeros with the given shape, dtype, and order.

    See also

    zeros_like
    Return an array of zeros with shape and type of input.
    ones_like
    Return an array of ones with shape and type of input.
    empty_like
    Return an empty array with shape and type of input.
    ones
    Return a new array setting values to one.
    empty
    Return a new uninitialized array.

    Examples

    >>>
    >>> np.zeros(5)
    array([ 0.,  0.,  0.,  0.,  0.])
    
    >>>
    >>> np.zeros((5,), dtype=np.int)
    array([0, 0, 0, 0, 0])
    
    >>>
    >>> np.zeros((2, 1))
    array([[ 0.],
           [ 0.]])
    
    >>>
    >>> s = (2,2)
    >>> np.zeros(s)
    array([[ 0.,  0.],
           [ 0.,  0.]])
    
    >>>
    >>> np.zeros((2,), dtype=[('x', 'i4'), ('y', 'i4')]) # custom dtype
    array([(0, 0), (0, 0)],
          dtype=[('x', '<i4'), ('y', '<i4')])
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  • 原文地址:https://www.cnblogs.com/qqhfeng/p/5318902.html
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