擅长:python、mysql、java
<pre><code>#use apply to transform tags to separate tags
df.apply(lambda x: [x['name']] + np.in1d(('a','b','c'),x.tags).astype(int).tolist() ,axis=1).apply(pd.Series)
#rename columns
df2.columns=['name', 'tags_a', 'tags_b', 'tags_c']
df2
Out[505]:
name tags_a tags_b tags_c
0 Rob 1 0 1
1 Erica 0 1 1
</code></pre>