Questions:
I am trying to run this code:
import xlrd
import os.path
import xlsxwriter
with open("arrays.xlsx", "a") as my_file:
workbook = xlsxwriter.Workbook(my_file)
worksheet = workbook.add_worksheet()
array = [1, 2, 3, 4, 5]
row = 0
for col, data in enumerate(array):
worksheet.write_column(row, 0, array)
workbook.close()
But when I run it, I get the following error:
Traceback (most recent call last):
File "C:\Users\hp\Anaconda3\lib\zipfile.py", line 1649, in __del__
self.close()
File "C:\Users\hp\Anaconda3\lib\zipfile.py", line 1666, in close
self.fp.seek(self.start_dir)
ValueError: I/O operation on closed file.
How to&Answers:
With with you don’t actually need to close the file.
The
withstatement is used to wrap the execution of a block with
methods defined by a context manager (see section With Statement
Context Managers). This allows commontry...except...finallyusage
patterns to be encapsulated for convenient reuse.
The implicit finally block which is hidden here will close the file for you. Just remove your explicit close and you will be fine.
Tags: file, pythonpython, sed
