File stream closes automatically if no file item is generated?
0
Is the stream to the file closed automatically after I run this, or do I have to close it myself.
text = open('input.txt','r').read()
I know I can do the same this way:
file = open('input.txt','r')
text = file.read()
file.close()
Which is a way to make sure that the stream is closed.
python
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
add a comment |
0
Is the stream to the file closed automatically after I run this, or do I have to close it myself.
text = open('input.txt','r').read()
I know I can do the same this way:
file = open('input.txt','r')
text = file.read()
file.close()
Which is a way to make sure that the stream is closed.
python
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
2
You have to close it yourself unless you usewith open(path) as f:
– SilverSlash
Nov 14 '18 at 15:56
In your first example, you don't store the return value ofopenanywhere, so you cannot close that file manually anyway.
– usr2564301
Nov 14 '18 at 16:20
Then it stays open, and that shouldn't be good?
– user605734 MBS
Nov 14 '18 at 16:25
When a program is done, it is customary to close all open files. But it will use a system resource as long as it's open in your program. In a multitasking system, you might experience some weird stuff.
– usr2564301
Nov 14 '18 at 18:42
add a comment |
0
0
0
Is the stream to the file closed automatically after I run this, or do I have to close it myself.
text = open('input.txt','r').read()
I know I can do the same this way:
file = open('input.txt','r')
text = file.read()
file.close()
Which is a way to make sure that the stream is closed.
python
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
Is the stream to the file closed automatically after I run this, or do I have to close it myself.
text = open('input.txt','r').read()
I know I can do the same this way:
file = open('input.txt','r')
text = file.read()
file.close()
Which is a way to make sure that the stream is closed.
python
python
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
asked Nov 14 '18 at 15:55
user605734 MBSuser605734 MBS
1012
1012
2
You have to close it yourself unless you usewith open(path) as f:
– SilverSlash
Nov 14 '18 at 15:56
In your first example, you don't store the return value ofopenanywhere, so you cannot close that file manually anyway.
– usr2564301
Nov 14 '18 at 16:20
Then it stays open, and that shouldn't be good?
– user605734 MBS
Nov 14 '18 at 16:25
When a program is done, it is customary to close all open files. But it will use a system resource as long as it's open in your program. In a multitasking system, you might experience some weird stuff.
– usr2564301
Nov 14 '18 at 18:42
add a comment |
2
You have to close it yourself unless you usewith open(path) as f:
– SilverSlash
Nov 14 '18 at 15:56
In your first example, you don't store the return value ofopenanywhere, so you cannot close that file manually anyway.
– usr2564301
Nov 14 '18 at 16:20
Then it stays open, and that shouldn't be good?
– user605734 MBS
Nov 14 '18 at 16:25
When a program is done, it is customary to close all open files. But it will use a system resource as long as it's open in your program. In a multitasking system, you might experience some weird stuff.
– usr2564301
Nov 14 '18 at 18:42
2
2
You have to close it yourself unless you use
with open(path) as f:– SilverSlash
Nov 14 '18 at 15:56
You have to close it yourself unless you use
with open(path) as f:– SilverSlash
Nov 14 '18 at 15:56
In your first example, you don't store the return value of
open anywhere, so you cannot close that file manually anyway.– usr2564301
Nov 14 '18 at 16:20
In your first example, you don't store the return value of
open anywhere, so you cannot close that file manually anyway.– usr2564301
Nov 14 '18 at 16:20
Then it stays open, and that shouldn't be good?
– user605734 MBS
Nov 14 '18 at 16:25
Then it stays open, and that shouldn't be good?
– user605734 MBS
Nov 14 '18 at 16:25
When a program is done, it is customary to close all open files. But it will use a system resource as long as it's open in your program. In a multitasking system, you might experience some weird stuff.
– usr2564301
Nov 14 '18 at 18:42
When a program is done, it is customary to close all open files. But it will use a system resource as long as it's open in your program. In a multitasking system, you might experience some weird stuff.
– usr2564301
Nov 14 '18 at 18:42
add a comment |
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2
You have to close it yourself unless you use
with open(path) as f:– SilverSlash
Nov 14 '18 at 15:56
In your first example, you don't store the return value of
openanywhere, so you cannot close that file manually anyway.– usr2564301
Nov 14 '18 at 16:20
Then it stays open, and that shouldn't be good?
– user605734 MBS
Nov 14 '18 at 16:25
When a program is done, it is customary to close all open files. But it will use a system resource as long as it's open in your program. In a multitasking system, you might experience some weird stuff.
– usr2564301
Nov 14 '18 at 18:42