remove some string from a text file

Question

I have a text file and I want to remove a part of text using Python 3.7.

Example:

helloooooooooooooo ### 122
How Are uuuuuuuuuuuuuuuuuuuuu?
GigaEthernet              0          1          0
GigaEthernet              1           2          0
GigaEthernet               2         1            3 
helloooooooooooooo ### 122
helloooooooooooooo ### 122

i want the text file change to:

GigaEthernet              0          1          0
GigaEthernet              1           2          0
GigaEthernet               2         1            3

It maybe "FastEthernet" instead of GigaEthernet so we should consider "Ethernet" as a key word).

Answer 1

Instead of giving you a complete solution, I'll help on how to approach this kind of problem. What do you have? A file. What do you want? A modified file.

• First, you need to load in the file as a data structure that you can work with, see: How to read a text file into a list or an array with Python
• Second, you need to remove some lines, see: How to remove specific element in an array using python
• Third, you need to save the changes to a file, see: Correct way to write line to file?

I hope that this helps.