回答編集履歴
1
追記
test
CHANGED
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@@ -23,3 +23,31 @@
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23
23
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lines_after = [line for line in f if 'XXX' not in line]
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24
24
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25
25
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```
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26
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+
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27
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28
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29
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おまけ
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30
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31
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---
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32
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+
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33
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次のように読み出しと書き出しを同時に行うと、更にメモリ効率が良くなります。
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34
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+
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35
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```Python
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36
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37
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with open(rfile) as fin, open(wfile) as fout:
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38
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39
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for line in fin:
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40
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41
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if 'XXX' in line:
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42
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43
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continue
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44
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45
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46
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47
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fout.write(line)
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48
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49
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```
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50
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51
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52
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53
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ここまで来るとシェルスクリプトやバッチの方がすっきりしそうなのはさておき。
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