Programming Essentials Python - Overview of Pandas Libraries - Writing Data Frames to Files

Pandas also provides simple APIs to write the data back to files.

Let us write the revenue per order along with order_id to a file.

Key Concepts Explanation

Writing Data Frames to Files

In this section, we will cover writing data frames to files using Pandas. We will use the to_csv method in Pandas to write the data frame to a CSV file.

# Write data frame to a CSV file
data_frame.to_csv('output.csv')

Checking Output Directory

Before writing the data frame to a file, we need to ensure that the output directory exists. We can use Python’s subprocess module to create the directory if it doesn’t already exist.

import subprocess

subprocess.call(['mkdir', '-p', output_dir])

Hands-On Tasks

  1. Make sure you have the data frame that is supposed to be written to file.
  2. Ensure you have write permissions on the folder under which files are supposed to be written.
  3. Use the appropriate keyword arguments to write the data frame into a file as per the requirements.

Conclusion

In this article, we learned how to write data frames to files using Pandas. It is essential to ensure that the output directory exists and that you have the necessary permissions to write files. By following the provided steps, you can easily write data frames to files in various formats like CSV or JSON. Practice these steps and engage with the community for further learning.

Watch the video tutorial here