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How to Export a Python List of Lists to a CSV File?

Linda Hamilton

Nov 10, 2024 am 11:45 AM

How to Export a Python List of Lists to a CSV File?

How to Write a Python List of Lists to a CSV File

Have a complex list of lists in Python? Need to export it to a clean, comma-separated values (CSV) file? Here's how:

Python's built-in csv module simplifies this task:

import csv

with open('out.csv', 'w', newline='') as f:
    writer = csv.writer(f)
    writer.writerows(a)

This code assumes your list is named a. The csv.writer() function handles the conversion, while newline='' ensures no extra line breaks are added.

To customize the output format, explore the optional parameters available in csv.writer(). With this approach, you can effortlessly transform your Python data into a well-structured CSV file.

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