ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
70 lines
1.3 KiB
Markdown
70 lines
1.3 KiB
Markdown
---
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id: 5e9a093a74c4063ca6f7c15b
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challengeType: 11
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videoId: BFlH0fN5xRQ
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dashedName: pandas-conditional-selection-and-modifying-dataframes
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---
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# --description--
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More resources:
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\- [Notebook](https://notebooks.ai/rmotr-curriculum/freecodecamp-intro-to-pandas-902ae59b)
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# --question--
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## --text--
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What will the following code print out?
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```py
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import pandas as pd
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certificates_earned = pd.DataFrame({
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'Certificates': [8, 2, 5, 6],
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'Time (in months)': [16, 5, 9, 12]
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})
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names = ['Tom', 'Kris', 'Ahmad', 'Beau']
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certificates_earned.index = names
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longest_streak = pd.Series([13, 11, 9, 7], index=names)
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certificates_earned['Longest streak'] = longest_streak
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print(certificates_earned)
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```
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## --answers--
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```
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Tom 13
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Kris 11
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Ahmad 9
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Beau 7
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Name: Longest streak, dtype: int64
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```
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---
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```
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Certificates Time (in months) Longest streak
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Tom 8 16 13
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Kris 2 5 11
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Ahmad 5 9 9
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Beau 6 12 7
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```
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---
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```
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Certificates Longest streak
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Tom 8 13
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Kris 2 11
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Ahmad 5 9
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Beau 6 7
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```
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## --video-solution--
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2
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