I have line:
df[["col_1", "col_2"]].replace(np.nan, "value", inplace = True)
And I get warrning: A value is trying to be set on copy of xlice from DataFrame.
could you explain me why I have that message, and how I can fix it? Thank you in advance
Asked
Active
Viewed 33 times
0
Adrien Pacifico
- 1,649
- 1
- 15
- 33
Abradab3
- 45
- 3
-
Does this answer your question? [How to deal with SettingWithCopyWarning in Pandas](https://stackoverflow.com/questions/20625582/how-to-deal-with-settingwithcopywarning-in-pandas) – masoud Aug 22 '22 at 12:04
-
It does not work – Abradab3 Aug 22 '22 at 12:17
-
Try this: `df.loc[:, ["col_1", "col_2"]] = df.loc[:, ["col_1", "col_2"]].replace(np.nan, "value")` – masoud Aug 22 '22 at 12:29