94f0cf0ef8
* fix: remove isHidden key from tool template * fix: removed isHidden key from English challenges * fix: remove isHidden key from Chinese challenges
34 lines
826 B
Markdown
34 lines
826 B
Markdown
---
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id: 5e9a093a74c4063ca6f7c15f
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challengeType: 11
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videoId: kj7QqjXhH6A
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---
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## Description
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<section id='description'>
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More resources:
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- <a href="https://notebooks.ai/rmotr-curriculum/data-cleaning-rmotr-freecodecamp-fd76fa59" target='_blank'>Notebook</a>
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</section>
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## Tests
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<section id='tests'>
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```yml
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question:
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text: |
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The Python method `.duplicated()` returns a boolean Series for your DataFrame. `True` is the return value for rows that:
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answers:
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- |
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contain a duplicate, where the value for the row contains the first occurrence of that value.
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- |
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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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- |
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contain a duplicate, where the value for the row contains either the first or second occurrence.
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solution: 2
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```
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</section>
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