擅长:python、mysql、java
<p>第一个演员名单(请原谅双关语!),然后通过<code>numpy</code>重建数据帧:</p>
<pre><code>import pandas as pd
import numpy as np
df = pd.DataFrame([['Jursassic World', 'Chris Patt|Bryce Dallas Howard']], columns=['movie', 'cast'])
df.cast = df.cast.str.split('|')
df2 = pd.DataFrame({'movie': np.repeat(df.movie.values, df.cast.str.len()),
'cast': np.concatenate(df.cast.values)})
# cast movie
# 0 Chris Patt Jursassic World
# 1 Bryce Dallas Howard Jursassic World
</code></pre>