Pandas fill multiple columns with 0 when null

Question

In pandas, I can fill a single column with 0 as follows:

df['COL'].fillna(0, inplace=True)

is it possible to fill multiple columns in same step?

No, not all columns, only a selected list – Victor Jul 11 '19 at 18:49 — Victor, Jul 11 '19 at 18:49

score 2 · Accepted Answer · answered Jul 11 '19 at 18:49

2

I guess:

df[list_cols] = df[list_cols].fillna(0)

answered Jul 11 '19 at 18:49

Quang Hoang

is this better than the inplace=True option? – Victor Jul 11 '19 at 18:51
No, `inplace` won't work for multi-columns. I'm not sure why, might be related to slicing. – Quang Hoang Jul 11 '19 at 18:54

1 Answers1