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51 lines
1.6 KiB
HTML
51 lines
1.6 KiB
HTML
<pre>
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DataFrame <code>students</code>
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+-------------+--------+
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| Column Name | Type |
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+-------------+--------+
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| id | int |
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| first | object |
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| last | object |
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| age | int |
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+-------------+--------+
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</pre>
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<p>编写一个解决方案，按以下方式重命名列：</p>
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<ul>
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<li><code>id</code> 重命名为 <code>student_id</code></li>
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<li><code>first</code> 重命名为 <code>first_name</code></li>
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<li><code>last</code> 重命名为 <code>last_name</code></li>
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<li><code>age</code> 重命名为 <code>age_in_years</code></li>
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</ul>
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<p>返回结果格式如下示例所示。</p>
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<p> </p>
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<p><strong>示例 1:</strong></p>
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<pre>
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<strong>输入：
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</strong>+----+---------+----------+-----+
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| id | first | last | age |
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+----+---------+----------+-----+
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| 1 | Mason | King | 6 |
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| 2 | Ava | Wright | 7 |
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| 3 | Taylor | Hall | 16 |
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| 4 | Georgia | Thompson | 18 |
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| 5 | Thomas | Moore | 10 |
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+----+---------+----------+-----+
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<b>输出：</b>
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+------------+------------+-----------+--------------+
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| student_id | first_name | last_name | age_in_years |
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+------------+------------+-----------+--------------+
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| 1 | Mason | King | 6 |
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| 2 | Ava | Wright | 7 |
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| 3 | Taylor | Hall | 16 |
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| 4 | Georgia | Thompson | 18 |
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| 5 | Thomas | Moore | 10 |
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+------------+------------+-----------+--------------+
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<b>解释：</b>
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列名已相应更换。</pre>
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