Which way is better for working with files? /u/CMDR_Pumpkin_Muffin Python Education

I usually do something like that:

f = open("data.txt", "r") data = f.read().splitlines() f.close() for line in data: print(line) 

And then I can work with data.

However very often I see people doing it like that:

with open("data.txt", "r") as f: for line in f: print(line) 

Do you not need to close the file when using with? Also I noticed I get into problems when using .splitlines() or .pop() with second method, maybe because I use those on f and in first method I assign f to data first. Somehow first way seems less prone to errors, but maybe that’s because I’ve used it before.

I usually do something like that:

f = open("data.txt", "r") data = f.read().splitlines() f.close() for line in data: print(line) 

And then I can work with data.

However very often I see people doing it like that:

with open("data.txt", "r") as f: for line in f: print(line) 

Do you not need to close the file when using with? Also I noticed I get into problems when using .splitlines() or .pop() with second method, maybe because I use those on f and in first method I assign f to data first. Somehow first way seems less prone to errors, but maybe that’s because I’ve used it before.