np.einsum函数用法

简介:

用法:

  • 函数语法:
numpy.einsum(subscripts, *operands, out=None, dtype=None, order='K', casting='safe', optimize=False)
  • 函数作用:
    将向量插入某一行或列
  • 参数说明:
    subscriptsstr
           指定求和的下标
    operands : list of array_like
    out : {ndarray, None}, optional
    dtype : {data-type, None}, optional
    order : {‘C’, ‘F’, ‘A’, ‘K’}, optional
    casting : {‘no’, ‘equiv’, ‘safe’, ‘same_kind’, ‘unsafe’}, optional
    optimize : {False, True, ‘greedy’, ‘optimal’}, optional
  • 返回值:output : ndarray
    具体的参数说明见:https://docs.scipy.org/doc/numpy/reference/generated/numpy.einsum.html#numpy.einsum
  • 例子:

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