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fillna(inplace=True) does not work with columns selected by loc
See original GitHub issuenot only multiple columns, but also one column.
df.loc[df.id==123, 'num'].fillna(0, inplace=True) doesn’t work ,
but df.loc[df.id==123, 'num'] = 123 works
why not edit the fillna function to adapt it in the future. It seems like a bug.
_Originally posted by @shuiyuejihua in https://github.com/pandas-dev/pandas/issues/14858#issuecomment-428979311_
Hi, I met with the same problem. Now that df.loc[df.id==123, 'num'] = 123 works, which means the operation takes effect on original df, why fillna(inplace=True) doesn’t work? This is really wired , and seems haven’t been fixed. My pandas version is 0.25.3.
Any comment or explaination are welcome, thanks!
Issue Analytics
- State:
- Created 4 years ago
- Reactions:4
- Comments:7 (4 by maintainers)
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@jreback no warning is currently raised for me
In general - see #16529 (or https://youtu.be/hK6o_TDXXN8)