擅长:python、mysql、java
<p>试试这个。你知道吗</p>
<pre><code>def count(data):
""" (list of list of str) -> list of int
Return the numbers of occurrences of strings that end in digits 0, 1, or 2
for each string.
>>> data = [['N', 'OW1'], ['Y', 'EH1', 'S'], ['AW1', 'OW1']]
>>> count(data)
[1, 1, 2]
"""
return [ len([item for item in sublist if item[-1].isdigit()]) for sublist in data]
</code></pre>