python insert on a specific line from file

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Abel
23 Aug 2019
1f = open("path_to_file", "r")
2contents = f.readlines()
3f.close()
4
5contents.insert(index, value)
6
7f = open("path_to_file", "w")
8contents = "".join(contents)
9f.write(contents)
10f.close()
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