擅长:python、mysql、java
<p>我能想到这样的事情:</p>
<pre><code>import pandas as pd
df = pd.DataFrame({'index': [0, 0, 0, 0, 0, 1,1,1,1,1, 2,2,2,2], 'value': ['val1', 'val2', 'val3', 'val4', 'val5', 'val6','val7','val8','val9','val10', 'val11','val12','val13','val14']})
df.groupby(by='index').apply(lambda x: list(x['value'])).to_dict()
</code></pre>
<p>输出为:</p>
<pre><code>{0: ['val1', 'val2', 'val3', 'val4', 'val5'],
1: ['val6', 'val7', 'val8', 'val9', 'val10'],
2: ['val11', 'val12', 'val13', 'val14']}
</code></pre>