擅长:python、mysql、java
<p>{a1在循环中定义了一个偶数参数,你可以在一个嵌套的参数中插入一个参数:</p>
<pre><code>data="""
#1 hello #2
this is #2 a #3 test
#2 life is good #1""".split("\n")
import collections
hashtags = collections.Counter(part
for line in data
for part in line.split()
if "#" in part)
print(hashtags.most_common())
</code></pre>
<p>给我这个输出:</p>
^{pr2}$