翻譯:
用法:zeros(shape, dtype=float, order='C')
返回:返回來一個給定形狀和類型的用0填充的數組;
參數:shape:形狀
dtype:數據類型,可選參數,默認numpy.float64
dtype類型:
t ,位域,如t4代表4位
b,布爾值,true or false
i,整數,如i8(64位)
u,無符號整數,u8(64位)
f,浮點數,f8(64位)
c,浮點負數,
o,對象,
s,a,字符串,s24
u,unicode,u24
order:可選參數,c代表與c語言類似,行優先;F代表列優先
例子:
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 dtypearray([(0, 0), (0, 0)], dtype=[('x', '<i4'), ('y', '<i4')])########################################################zeros(shape, dtype=float, order='C')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 dtypearray([(0, 0), (0, 0)], dtype=[('x', '<i4'), ('y', '<i4')])Type: builtin_function_or_method以上這篇python中numpy.zeros(np.zeros)的使用方法就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持VEVB武林網。
新聞熱點
疑難解答