Read a file, skip unwanted lines & add into a List

I have the following code where I scan every line and put in a list. If the line matches a string "New changes", I don't want to put in the list. Any suggestion on how to achieve this?

with open('file.txt', 'rb') as f:
    mainlist = [line.strip() for line in f]


List comprehensions can also do filtering:

mainlist = [line.strip() for line in f if "New changes" not in line]

You can filter within the list comprehension :

mainlist = [line.strip() for line in f if line.strip() !=  "New changes"]

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