--- id: 5e9a093a74c4063ca6f7c15e title: Pulizia dati con DataFrames challengeType: 11 videoId: sTMN_pdI6S0 bilibiliIds: aid: 505597026 bvid: BV1Yg411c7bx cid: 409018948 dashedName: data-cleaning-with-dataframes --- # --description-- *Invece di usare notebooks.ai come mostrato nel video, puoi usare Google Colab.* Altre risorse: - [Notebook su GitHub](https://github.com/ine-rmotr-curriculum/data-cleaning-rmotr-freecodecamp) - [Come aprire Notebooks da GitHub usando Google Colab.](https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb) # --question-- ## --text-- Cosa verrĂ  visualizzato nella console con il seguente codice? ```py import pandas as pd import numpy as np s = pd.Series([np.nan, 1, 2, np.nan, 3]) s = s.fillna(method='ffill') print(s) ``` ## --answers--
0    1.0
1    1.0
2    2.0
3    3.0
4    3.0
dtype: float64
---
0    NaN
1    1.0
2    2.0
3    2.0
4    3.0
dtype: float64
---
0    NaN
1    1.0
2    2.0
3    NaN
4    3.0
dtype: float64
## --video-solution-- 2