Insert line at middle of file with Python?
python
Solution
This is a way of doing the trick.
with open("path_to_file", "r") as f:
contents = f.readlines()
contents.insert(index, value)
with open("path_to_file", "w") as f:
contents = "".join(contents)
f.write(contents)
`index` and `value` are the line and value of your choice, lines starting from 0.
Problem
Is there a way to do this? Say I have a file that's a list of names that goes like this: - Alfred - Bill - Donald How could I insert the third name, "Charlie", at line x (in this case 3), and automatically send all others down one line? I've seen other questions like this, but they didn't get helpful answers. Can it be done, preferably with either a method or a loop?