How to Write CSV File in Python?

Hey Dev,

This tutorial will give you an example of how to write csv file in python. you can see python write csv file example. you'll learn python writing csv file example. Here you will learn python output to csv file example. Let's get started with how to write csv file in python 3.

In this example, we will write demo.csv file with ID, Name and Email fields. we will use open(), writer(), writerow(), writerows() and close() functions to write csv file. we will use functions for the following reasons.

open(): it will write csv file if not exist.

writer(): it will write csv file object for write new rows.

writerow(): it will write single row with heading.

writerows(): it will write multiple rows with list.

close(): it will close created new csv file object.

Now, you can see below simple code and output:

You can use these examples with python3 (Python 3) version.

Example:

main.py

import csv
  
# open the file in the write mode
f = open('demo.csv', 'w')
  
# create the csv writer
writer = csv.writer(f)
  
header = ['ID', 'Name', 'Email']
data = [
	[1, 'Hardik Savani', 'hardik@gmail.com'],
	[2, 'Vimal Kashiyani', 'vimal@gmail.com'],
	[3, 'Harshad Pathak', 'harshad@gmail.com'],
]
  
# write the header
writer.writerow(header)
  
# write a row to the csv file
writer.writerows(data)
  
# close the file
f.close()

Output:

You can see csv file layout:

I hope it can help you...