【help of python】ones函数

>>> 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.]])