--description--

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

More resources:

• <a href="https://github.com/ine-rmotr-curriculum/data-cleaning-rmotr-freecodecamp" target="_blank" rel="noopener noreferrer nofollow">Notebooks on GitHub</a>
• <a href="https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb" target="_blank" rel="noopener noreferrer nofollow">How to open Notebooks from GitHub using Google Colab.</a>

--questions--

--text--

The Python method .duplicated() returns a boolean Series for your DataFrame. True is the return value for rows that:

--answers--

contain a duplicate, where the value for the row contains the first occurrence of that value.

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contain a duplicate, where the value for the row is at least the second occurrence of that value.

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contain a duplicate, where the value for the row contains either the first or second occurrence.

--video-solution--

2