freeCodeCamp/curriculum/challenges/italian/08-data-analysis-with-python/data-analysis-with-python-course/pandas-creating-columns.md

id	title	challengeType	videoId	dashedName
5e9a093a74c4063ca6f7c15c	Pandas Creating Columns	11	_sSo2XZoB3E	pandas-creating-columns

--description--

Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.

More resources:

• Notebooks on GitHub
• How to open Notebooks from GitHub using Google Colab.

--question--

--text--

What code would add a "Certificates per month" column to the certificates_earned DataFrame like the one below?

      Certificates  Time (in months)  Certificates per month
Tom               8                16                    0.50
Kris              2                 5                    0.40
Ahmad             5                 9                    0.56
Beau              6                12                    0.50

--answers--

certificates_earned['Certificates'] /
certificates_earned['Time (in months)']

---

certificates_earned['Certificates per month'] = round(
    certificates_earned['Certificates'] /
    certificates_earned['Time (in months)']
)

---

certificates_earned['Certificates per month'] = round(
    certificates_earned['Certificates'] /
    certificates_earned['Time (in months)'], 2
)

--video-solution--

3