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* fix(curriculum): standradize links in curriculum * Data analiysis links * CIP links * fixed links in s-expressions * Update curriculum/challenges/english/01-responsive-web-design/basic-css/use-hex-code-for-specific-colors.md Co-authored-by: Ilenia <nethleen@gmail.com> * added space before target attribute * standarize external and .rock example links * wrap "check out the projects" around the links Co-authored-by: Ilenia <nethleen@gmail.com>
1.1 KiB
1.1 KiB
id, title, challengeType, videoId, bilibiliIds, dashedName
| id | title | challengeType | videoId | bilibiliIds | dashedName | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5e9a093a74c4063ca6f7c15d | Data Cleaning Introduction | 11 | ovYNhnltVxY |
|
data-cleaning-introduction |
--description--
Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.
More resources:
--question--
--text--
What will the following code print out?
import pandas as pd
import numpy as np
s = pd.Series(['a', 3, np.nan, 1, np.nan])
print(s.notnull().sum())
--answers--
3
0 True 1 True 2 False 3 True 4 False dtype: bool
0 False 1 False 2 True 3 False 4 True dtype: bool
--video-solution--
1