【help of python】ones

发布时间:2019-08-30 08:35:42编辑:auto阅读(1519)

    >>> help(ones)
    Help on function ones in module numpy.core.numeric:
    
    ones(shape, dtype=None, order='C')
    Return a new array of given shape and type, filled with ones.
    
    Please refer to the documentation for `zeros` for further details.
    
    See Also
    --------
    zeros, ones_like
    
    Examples
    --------
    >>> np.ones(5)
    array([ 1.,  1.,  1.,  1.,  1.])
    
    >>> np.ones((5,), dtype=np.int)
    array([1, 1, 1, 1, 1])
    
    >>> np.ones((2, 1))
    array([[ 1.],
           [ 1.]])
    
    >>> s = (2,2)
    >>> np.ones(s)
    array([[ 1.,  1.],
           [ 1.,  1.]])
    

关键字