擅长:python、mysql、java
<p>IIUC,你可以试试:</p>
<pre><code>df = pd.DataFrame({'patient.reaction': {0: [{'reactionmeddrapt': 'CHEST PAIN'}],
1: [{'reactionmeddrapt': 'DISTURBANCE IN..'}],
2: [{'reactionmeddrapt': 'EXTRAMIDAL DISORDER'}]}})
df = df['patient.reaction'].explode().apply(pd.Series)
</code></pre>
<p>输出:</p>
<pre><code> reactionmeddrapt
0 CHEST PAIN
1 DISTURBANCE IN..
2 EXTRAMIDAL DISORDER
</code></pre>