Python NumPy中的np.mean（）vs np.average（）吗？

Python NumPy中的np.mean（）vs np.average（）吗？

np.average采用可选的权重参数。如果未提供，则等效。看一下源代码：Mean，Average

np.mean：

try:    mean = a.meanexcept AttributeError:    return _wrapit(a, 'mean', axis, dtype, out)return mean(axis, dtype, out)

np.average：

...if weights is None :    avg = a.mean(axis)    scl = avg.dtype.type(a.size/avg.size)else:    #pre that does weighted mean hereif returned: #returned is another optional argument    scl = np.multiply(avg, 0) + scl    return avg, sclelse:    return avg...