回答編集履歴
1
追記
answer
CHANGED
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@@ -6,4 +6,17 @@
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6
6
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f.seek(0)
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7
7
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f.write("書きたいもの")
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8
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f.write(original_data)
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9
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-
```
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9
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```
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10
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11
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もう少し素直なアプローチ。
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12
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13
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```python
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14
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with open("target.txt", "r") as f:
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15
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original_data = f.read()
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17
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with open("target.txt", "w") as f:
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18
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f.write("書きたいもの")
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19
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f.write(original_data)
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20
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```
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21
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22
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この方法は全データをメモリ上に読み込みます。
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