擅长:python、mysql、java
<pre><code>>>> import numpy
>>> l = numpy.array(['cat', 'mescaline', 'popcorn'])
>>> l[numpy.random.randint(0, len(l), (3, 2))]
array([['popcorn', 'mescaline'],
['mescaline', 'popcorn'],
['cat', 'cat']],
dtype='|S9')
</code></pre>