擅长:python、mysql、java
<pre><code>df = pd.DataFrame(data={"id":[1,2,3,4,5],
"station":[[2],[7],[2],[2,36],[29, 15, 52114, 47]]})
df['more_than_one_station'] = df['station'].apply(lambda x:True if len(x)>1 else False)
df = df[df["more_than_one_station"]==False]
df['station'] = df['station'].apply(lambda x : pd.Series(x))
df.drop(['more_than_one_station'],axis=1,inplace=True)
</code></pre>