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[英]Append a text word into a text file after searching for specific word in python
[英]Python find word in a rows and append this in a new text file
我將 jupyter notebook 與 pandas 一起使用,我想在一個大文件中找到我選擇的重復出現的單詞,然后選擇行並粘貼它或附加到另一個文本文件上,例如使用單詞“ test ”。:
this is a test sample line
this is a second example line
this is a third example line
this is a test fourth sample line
this is a final example line
並在一個新的文本文件中只出現“ test ”一詞的行:
this is a test sample line
this is a test fourth sample line
我如何使用 jupyter 在 python 中實現這一點,讓事情變得更容易?
附注。 如果您可以從多個文本文件中讀取並附加行而不覆蓋它們,那將是完美的!
一如既往的感謝!
假設以下數據幀作為輸入:
col
0 this is a test sample line
1 this is a second example line
2 this is a third example line
3 this is a test fourth sample line
4 this is a final example line
你可以使用str.contains
:
df[df['col'].str.contains(r'\btest\b', regex=True)]
輸出:
col
0 this is a test sample line
3 this is a test fourth sample line
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