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ValueError: I/O operation on closed file in Python, ValueError: I/O operation on closed file, I/O operation on closed file, ValueError: I/O operation on closed, I/O operation on closed

[Solved] ValueError: I/O operation on closed file in Python

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I am trying to write in my CSV file with python But Somehow I am facing the following error: ValueError: I/O operation on closed file in Python. In this Exerror article, We are going to learn about How to reproduce this error and we will discuss All Possible Solutions Lets Get Start with This Article.

Contents
  1. How ValueError: I/O operation on closed file in Python Error Occurs?
  2. How To Solve ValueError: I/O operation on closed file in Python Error?
  3. Solution 1: indentation
  4. Solution 2: Example
  5. Solution 3: Watch this video
  6. Conclusion

How ValueError: I/O operation on closed file in Python Error Occurs?

I am trying to write in my CSV file with python But Somehow I am facing the following error.

ValueError: I/O operation on closed file

So here I am writing all the possible solutions that I have tried to resolve this error.

How To Solve ValueError: I/O operation on closed file in Python Error?

  1. How To Solve ValueError: I/O operation on closed file in Python Error?

    To Solve ValueError: I/O operation on closed file in Python Error You just need to make sure your indentation is right. This error usually occurs when you are trying to write on file on outside of with open(). So Make Sure Your Write Function Must be In the with open(). For Example, I am trying to write in my students.csv file And in the below Code, I am facing ValueError: I/O operation on closed file error Because I am trying to write just after the file is Closed. and that’s causing this error. Your file is only open until you are in with open() outside of with open() your file will be closed. And now, Your error will be solved.

  2. ValueError: I/O operation on closed file in Python

    To Solve ValueError: I/O operation on closed file in Python Error You just need to make sure your indentation is right. This error usually occurs when you are trying to write on file on outside of with open(). So Make Sure Your Write Function Must be In the with open(). For Example, I am trying to write in my students.csv file And in the below Code, I am facing ValueError: I/O operation on closed file error Because I am trying to write just after the file is Closed. and that’s causing this error. Your file is only open until you are in with open() outside of with open() your file will be closed. And now, Your error will be solved.

Solution 1: indentation

To Solve ValueError: I/O operation on closed file in Python Error You just need to make sure your indentation is right. This error usually occurs when you are trying to write on file on outside of with open(). So Make Sure Your Write Function Must be In the with open().

For Example, I am trying to write in my students.csv file And in the below Code, I am facing ValueError: I/O operation on closed file error Because I am trying to write just after the file is Closed. and that’s causing this error.

import csv    

with open('students.csv', 'w') as studentFile:
    writeFile = csv.DictWriter(csvfile, fieldnames=fieldnames)
    print(studentFile.closed) // false

print(studentFile.closed)  // true
writeFile.writerow({'s_f_name': 'Rohan', 's_l_name': 'Khurana'}) // ValueError: I/O operation on closed file

Your file is only open until you are in with open() outside of with open() your file will be closed. Just like this.

import csv    

with open('students.csv', 'w') as studentFile:
    writeFile = csv.DictWriter(csvfile, fieldnames=fieldnames)
    print(studentFile.closed) // false

    print(studentFile.closed)  // false
    writeFile.writerow({'s_f_name': 'Rohan', 's_l_name': 'Khurana'}) // Write Successful

And now, Your error will be solved.

Solution 2: Example

You can write in your CSV just like this.

import csv    

studentCsv = open('students.csv', 'w', encoding='utf-8')

studentCsv.write('student 1' + '\n')
studentCsv.write('student 2' + '\n')
studentCsv.write('student 3' + '\n')

Solution 3: Watch this video

Conclusion

It’s all About this error. I hope We Have solved Your error. Comment below Your thoughts and your queries. Also, Comment below on which solution worked for you.

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