主要介绍了python 的numpy库中的mean()函数用法介绍，具有很好对参考价值，希望对大家有所帮助。一起跟随小编过来看看吧

1. mean() 函数定义： numpy.mean(a, axis=None, dtype=None, out=None, keepdims=)[source] Compute the arithmetic mean along the specified axis. Returns the average of the array elements. The average is taken over the flattened array by default, otherwise