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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
我将 jupyter notebook 与 pandas 一起使用,我想在一个大文件中找到我选择的重复出现的单词,然后选择行并粘贴它或附加到另一个文本文件上,例如使用单词“ 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
并在一个新的文本文件中只出现“ test ”一词的行:
this is a test sample line
this is a test fourth sample line
我如何使用 jupyter 在 python 中实现这一点,让事情变得更容易?
附注。 如果您可以从多个文本文件中读取并附加行而不覆盖它们,那将是完美的!
一如既往的感谢!
假设以下数据帧作为输入:
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)]
输出:
col
0 this is a test sample line
3 this is a test fourth sample line
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