擅长:python、mysql、java
<p><a href="https://github.com/EelcoHoogendoorn/Numpy_arraysetops_EP" rel="nofollow">numpy_indexed</a>包(免责声明:我是其作者)可用于以矢量化方式解决此类问题:</p>
<pre><code>index = npi.as_index(arr)
keep = index.count == 1
discard = np.invert(keep)
print(index.unique[keep])
</code></pre>