how to fill nan values with mean in pandas

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showing results for - "how to fill nan values with mean in pandas"
Christian
10 Jan 2018
1df.fillna(df.mean(), inplace=True)
Roberta
10 Jan 2018
1df.fillna(df.mean())
Jo
05 Mar 2018
1>>> df
2  name  value
30    A      1
41    A    NaN
52    B    NaN
63    B      2
74    B      3
85    B      1
96    C      3
107    C    NaN
118    C      3
12>>> df["value"] = df.groupby("name").transform(lambda x: x.fillna(x.mean()))
13>>> df
14  name  value
150    A      1
161    A      1
172    B      2
183    B      2
194    B      3
205    B      1
216    C      3
227    C      3
238    C      3
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