956 B
956 B
id | title | challengeType | videoId | 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