numpy.zeros_like(a, dtype=None, order='K', subok=True, shape=None)[source]
Return an array of zeros with the same shape and type as a given array.
Parameters：
a：array_like
The shape and data-type of a define these same attributes of the returned array.
dtype：data-type, optional
Overrides the data type of the result.
New in version 1.6.0.
order：{‘C’, ‘F’, ‘A’, or ‘K’}, optional
Overrides the memory layout of the result. ‘C’ means C-order, ‘F’ means F-order, ‘A’ means ‘F’ if a is Fortran contiguous, ‘C’ otherwise. ‘K’ means match the layout of a as closely as possible.
New in version 1.6.0.
subok：bool, optional.
If True, then the newly created array will use the sub-class type of ‘a’, otherwise it will be a base-class array. Defaults to True.
shape：int or sequence of ints, optional.
Overrides the shape of the result. If order=’K’ and the number of dimensions is unchanged, will try to keep order, otherwise, order=’C’ is implied.
New in version 1.17.0.
Returns：
out：ndarray
Array of zeros with the same shape and type as a.
See also
empty_like
Return an empty array with shape and type of input.
ones_like
Return an array of ones with shape and type of input.
full_like
Return a new array with shape of input filled with value.
zeros
Return a new array setting values to zero.
Examples
代码语言：javascript复制>>> x = np.arange(6)
>>> x = x.reshape((2, 3))
>>> x
array([[0, 1, 2],
[3, 4, 5]])
>>> np.zeros_like(x)
array([[0, 0, 0],
[0, 0, 0]])
>>> y = np.arange(3, dtype=float)
>>> y
array([0., 1., 2.])
>>> np.zeros_like(y)
array([0., 0., 0.])
