Editing certain line of a file

Question

I have a text file which has 100 lines ; for example it's 75th line is "x" and I want change it to "y".
What should I do?

Answer 1

I did get you, but I think you didn't get me.

You can read in your whole file, and then every line will be just a string in a list.

So your line 75 would be thatlist[74], it's just regular Python.

I made a small demonstration:

https://code.sololearn.com/c1t40xJ5RwJG/?ref=app

Answer 2

HonFu I think you didn't get what I meant;
If I append something it adds to the end of my text file.
If I write something it overwrites the whole file.
I want to change something in the middle of the file.

Answer 3

Ok
The problem is solved now.

Answer 4

You can read your file in, for example with the file object method readlines.

That will give you a regular list with regular strings in it which you can just manipulate like you normally do in a code.

Are you familiar with the basic file handling stuff? You might wanna look for tutorials like this:

https://www.pythonforbeginners.com/cheatsheet/JUMP_LINK__&&__python__&&__JUMP_LINK-file-handling/