擅长:python、mysql、java
<p>您应该指定(是的,显式地)数据类型,在本例中是float(或int,随便什么!)以下内容:</p>
<pre><code>rightsum = np.sum(float(righttime))
rightmean = np.mean(float(righttime))
</code></pre>
<p>记住,必须为numpy.sum()提供一个“类似数组”的结构:</p>
<pre><code>>>>import numpy as np
>>>
>>> mylist = [1, 5, 2]
>>> a = np.asarray(mylist)
>>> a.sum()
8
</code></pre>
<p>或者:</p>
<pre><code>>>> np.sum([1,5,2])
8
</code></pre>