<p>我有以下数据帧,<code>df_melt</code>:</p>
<pre><code> MatchID GameWeek Date Team Home AgainstTeam
0 46605 1 2019-08-09 Liverpool Home Norwich City
1 46605 1 2019-08-09 Norwich City Away Liverpool
2 46606 1 2019-08-10 AFC Bournemouth Home Sheffield United
3 46606 1 2019-08-10 Sheffield United Away AFC Bournemouth
4 46607 1 2019-08-10 Burnley Home Southampton
.. ... ... ... ... ... ...
540 46875 28 TBC Aston Villa Home
541 46875 28 TBC Sheffield United Away
</code></pre>
<p>显然存在一个问题,“TBC”值在几行中</p>
<p>如何删除这些有缺陷的行,或者以其他方式修复它们</p>