I am confused with my Python. ValueError: I/O operation on closed file
Kida lost here. I am trying to get a consolidated csv and I keep getting this error:
File "consolidate.py", line 26, in csv_merge.write(line)
ValueError: I/O operation on closed file.
I tried moving indentation:
csv_header='name,location,age,phonenumber'
csv_out = 'consolidated.csv'
csv_d
dir_tree = os.walk(csv_dir)
for dirpath, dirnames, filenames in dir_tree:
pass
csv_list =
for file in filenames:
if file.endswith('.csv'):
csv_list.append(file)
csv_merge = open(csv_out, 'w')
csv_merge.write(csv_header)
csv_merge.write('n')ir = os.getcwd()
for file in csv_list:
csv_in = open(file)
for line in csv_in:
if line.startswith(csv_header):
continue
csv_merge.write(line)
csv_in.close()
csv_merge.close()
print('Verify consolidated CSV file : ' + csv_out)
But this didn't work. How can I resolve this error?
python
edited Nov 15 '18 at 2:19
Joel
1,5686719
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
add a comment |
Kida lost here. I am trying to get a consolidated csv and I keep getting this error:
File "consolidate.py", line 26, in csv_merge.write(line)
ValueError: I/O operation on closed file.
I tried moving indentation:
csv_header='name,location,age,phonenumber'
csv_out = 'consolidated.csv'
csv_d
dir_tree = os.walk(csv_dir)
for dirpath, dirnames, filenames in dir_tree:
pass
csv_list =
for file in filenames:
if file.endswith('.csv'):
csv_list.append(file)
csv_merge = open(csv_out, 'w')
csv_merge.write(csv_header)
csv_merge.write('n')ir = os.getcwd()
for file in csv_list:
csv_in = open(file)
for line in csv_in:
if line.startswith(csv_header):
continue
csv_merge.write(line)
csv_in.close()
csv_merge.close()
print('Verify consolidated CSV file : ' + csv_out)
But this didn't work. How can I resolve this error?
python
edited Nov 15 '18 at 2:19
Joel
1,5686719
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
6
You neveropen()csv_merge
– G. Anderson
Nov 14 '18 at 22:36
csv_merge != csv_in
– JacobIRR
Nov 14 '18 at 22:37
How wascsv_mergeinitialized?
– DYZ
Nov 14 '18 at 22:37
2
Even if you did opencsv_merge, you close it each time through the loop.
– kindall
Nov 14 '18 at 22:39
I have edited my question.
– MrKarma4u
Nov 14 '18 at 22:52
add a comment |
Kida lost here. I am trying to get a consolidated csv and I keep getting this error:
File "consolidate.py", line 26, in csv_merge.write(line)
ValueError: I/O operation on closed file.
I tried moving indentation:
csv_header='name,location,age,phonenumber'
csv_out = 'consolidated.csv'
csv_d
dir_tree = os.walk(csv_dir)
for dirpath, dirnames, filenames in dir_tree:
pass
csv_list =
for file in filenames:
if file.endswith('.csv'):
csv_list.append(file)
csv_merge = open(csv_out, 'w')
csv_merge.write(csv_header)
csv_merge.write('n')ir = os.getcwd()
for file in csv_list:
csv_in = open(file)
for line in csv_in:
if line.startswith(csv_header):
continue
csv_merge.write(line)
csv_in.close()
csv_merge.close()
print('Verify consolidated CSV file : ' + csv_out)
But this didn't work. How can I resolve this error?
python
edited Nov 15 '18 at 2:19
Joel
1,5686719
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
Kida lost here. I am trying to get a consolidated csv and I keep getting this error:
File "consolidate.py", line 26, in csv_merge.write(line)
ValueError: I/O operation on closed file.
I tried moving indentation:
csv_header='name,location,age,phonenumber'
csv_out = 'consolidated.csv'
csv_d
dir_tree = os.walk(csv_dir)
for dirpath, dirnames, filenames in dir_tree:
pass
csv_list =
for file in filenames:
if file.endswith('.csv'):
csv_list.append(file)
csv_merge = open(csv_out, 'w')
csv_merge.write(csv_header)
csv_merge.write('n')ir = os.getcwd()
for file in csv_list:
csv_in = open(file)
for line in csv_in:
if line.startswith(csv_header):
continue
csv_merge.write(line)
csv_in.close()
csv_merge.close()
print('Verify consolidated CSV file : ' + csv_out)
But this didn't work. How can I resolve this error?
python
python
edited Nov 15 '18 at 2:19
Joel
1,5686719
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
edited Nov 15 '18 at 2:19
Joel
1,5686719
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
edited Nov 15 '18 at 2:19
Joel
1,5686719
edited Nov 15 '18 at 2:19
Joel
1,5686719
edited Nov 15 '18 at 2:19
Joel
1,5686719
1,5686719
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
asked Nov 14 '18 at 22:34
MrKarma4uMrKarma4u
12
12
6
You neveropen()csv_merge
– G. Anderson
Nov 14 '18 at 22:36
csv_merge != csv_in
– JacobIRR
Nov 14 '18 at 22:37
How wascsv_mergeinitialized?
– DYZ
Nov 14 '18 at 22:37
2
Even if you did opencsv_merge, you close it each time through the loop.
– kindall
Nov 14 '18 at 22:39
I have edited my question.
– MrKarma4u
Nov 14 '18 at 22:52
add a comment |
6
You neveropen()csv_merge
– G. Anderson
Nov 14 '18 at 22:36
csv_merge != csv_in
– JacobIRR
Nov 14 '18 at 22:37
How wascsv_mergeinitialized?
– DYZ
Nov 14 '18 at 22:37
2
Even if you did opencsv_merge, you close it each time through the loop.
– kindall
Nov 14 '18 at 22:39
I have edited my question.
– MrKarma4u
Nov 14 '18 at 22:52
6
6
You never
open() csv_merge– G. Anderson
Nov 14 '18 at 22:36
You never
open() csv_merge– G. Anderson
Nov 14 '18 at 22:36
csv_merge != csv_in– JacobIRR
Nov 14 '18 at 22:37
csv_merge != csv_in– JacobIRR
Nov 14 '18 at 22:37
How was
csv_merge initialized?– DYZ
Nov 14 '18 at 22:37
How was
csv_merge initialized?– DYZ
Nov 14 '18 at 22:37
2
2
Even if you did open
csv_merge, you close it each time through the loop.– kindall
Nov 14 '18 at 22:39
Even if you did open
csv_merge, you close it each time through the loop.– kindall
Nov 14 '18 at 22:39
I have edited my question.
– MrKarma4u
Nov 14 '18 at 22:52
I have edited my question.
– MrKarma4u
Nov 14 '18 at 22:52
add a comment |
1 Answer
1
active
oldest
votes
You never open csv_merge properly and even if you do you still close csv_merge after the first item in csv_list is written.
Why are you even using things like csv_merge.close()?
The convention is to use things like with open(csv_merge, 'w') as f:, that way the file always gets closed, even if the loop or script fails to execute properly.
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53309752%2fi-am-confused-with-my-python-valueerror-i-o-operation-on-closed-file%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You never open csv_merge properly and even if you do you still close csv_merge after the first item in csv_list is written.
Why are you even using things like csv_merge.close()?
The convention is to use things like with open(csv_merge, 'w') as f:, that way the file always gets closed, even if the loop or script fails to execute properly.
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
add a comment |
You never open csv_merge properly and even if you do you still close csv_merge after the first item in csv_list is written.
Why are you even using things like csv_merge.close()?
The convention is to use things like with open(csv_merge, 'w') as f:, that way the file always gets closed, even if the loop or script fails to execute properly.
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
add a comment |
You never open csv_merge properly and even if you do you still close csv_merge after the first item in csv_list is written.
Why are you even using things like csv_merge.close()?
The convention is to use things like with open(csv_merge, 'w') as f:, that way the file always gets closed, even if the loop or script fails to execute properly.
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
You never open csv_merge properly and even if you do you still close csv_merge after the first item in csv_list is written.
Why are you even using things like csv_merge.close()?
The convention is to use things like with open(csv_merge, 'w') as f:, that way the file always gets closed, even if the loop or script fails to execute properly.
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
answered Nov 14 '18 at 23:05
jtwilsonjtwilson
325
325
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53309752%2fi-am-confused-with-my-python-valueerror-i-o-operation-on-closed-file%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
6
You never
open()csv_merge– G. Anderson
Nov 14 '18 at 22:36
csv_merge != csv_in– JacobIRR
Nov 14 '18 at 22:37
How was
csv_mergeinitialized?– DYZ
Nov 14 '18 at 22:37
2
Even if you did open
csv_merge, you close it each time through the loop.– kindall
Nov 14 '18 at 22:39
I have edited my question.
– MrKarma4u
Nov 14 '18 at 22:52