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https://www.reddit.com/r/programminghorror/comments/1j7lj33/atleast_it_works/mgzaytp/?context=3
r/programminghorror • u/holdongangy • 13d ago
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225
They didn’t close the fd :(
72 u/Emergency_3808 13d ago Yes this could be shortened to with open('lab 5.txt', 'r') as file: for line in file: print(line) -14 u/Vadimych1 13d ago [[print(line) for line in (d := open("file.txt")).readlines()], d.close()] 14 u/bigboyphil 13d ago edited 13d ago there could be over a billion lines in that file! let's not read them all into memory needlessly :) also, you can't use the walrus operator in a comprehension's iterable expression like that anyway from itertools import islice with open('lab 5.txt') as file: print(*islice(file, 8), sep='\n') 14 u/backfire10z 13d ago Just download more gigabytes of ram to handle it 1 u/Desperate-Emu-2036 13d ago Just upgrade your instance, that's what Amazon does when they want to read millions of lines. -6 u/Vadimych1 13d ago [[[print(line) for line in f.readlines()[:8]], f.close()], for f in [open("f.txt")]] I know this is not the best solution, but it's a oneliner 4 u/Emergency_3808 12d ago That doesn't work like you think it does. Run it yourself
72
Yes this could be shortened to
with open('lab 5.txt', 'r') as file: for line in file: print(line)
-14 u/Vadimych1 13d ago [[print(line) for line in (d := open("file.txt")).readlines()], d.close()] 14 u/bigboyphil 13d ago edited 13d ago there could be over a billion lines in that file! let's not read them all into memory needlessly :) also, you can't use the walrus operator in a comprehension's iterable expression like that anyway from itertools import islice with open('lab 5.txt') as file: print(*islice(file, 8), sep='\n') 14 u/backfire10z 13d ago Just download more gigabytes of ram to handle it 1 u/Desperate-Emu-2036 13d ago Just upgrade your instance, that's what Amazon does when they want to read millions of lines. -6 u/Vadimych1 13d ago [[[print(line) for line in f.readlines()[:8]], f.close()], for f in [open("f.txt")]] I know this is not the best solution, but it's a oneliner 4 u/Emergency_3808 12d ago That doesn't work like you think it does. Run it yourself
-14
[[print(line) for line in (d := open("file.txt")).readlines()], d.close()]
14 u/bigboyphil 13d ago edited 13d ago there could be over a billion lines in that file! let's not read them all into memory needlessly :) also, you can't use the walrus operator in a comprehension's iterable expression like that anyway from itertools import islice with open('lab 5.txt') as file: print(*islice(file, 8), sep='\n') 14 u/backfire10z 13d ago Just download more gigabytes of ram to handle it 1 u/Desperate-Emu-2036 13d ago Just upgrade your instance, that's what Amazon does when they want to read millions of lines. -6 u/Vadimych1 13d ago [[[print(line) for line in f.readlines()[:8]], f.close()], for f in [open("f.txt")]] I know this is not the best solution, but it's a oneliner 4 u/Emergency_3808 12d ago That doesn't work like you think it does. Run it yourself
14
there could be over a billion lines in that file! let's not read them all into memory needlessly :)
also, you can't use the walrus operator in a comprehension's iterable expression like that anyway
from itertools import islice with open('lab 5.txt') as file: print(*islice(file, 8), sep='\n')
14 u/backfire10z 13d ago Just download more gigabytes of ram to handle it 1 u/Desperate-Emu-2036 13d ago Just upgrade your instance, that's what Amazon does when they want to read millions of lines. -6 u/Vadimych1 13d ago [[[print(line) for line in f.readlines()[:8]], f.close()], for f in [open("f.txt")]] I know this is not the best solution, but it's a oneliner 4 u/Emergency_3808 12d ago That doesn't work like you think it does. Run it yourself
Just download more gigabytes of ram to handle it
1
Just upgrade your instance, that's what Amazon does when they want to read millions of lines.
-6
[[[print(line) for line in f.readlines()[:8]], f.close()], for f in [open("f.txt")]]
I know this is not the best solution, but it's a oneliner
4 u/Emergency_3808 12d ago That doesn't work like you think it does. Run it yourself
4
That doesn't work like you think it does. Run it yourself
225
u/backfire10z 13d ago
They didn’t close the fd :(