删除 pandas dataframe 的所有行，其中所有列都满足某些条件

Question

My dataframe looks like this:

I want to delete ALL rows (red marked in the picture) where every column has a value like:

"", "nan", "NaT"

I tried several things like dropna, replacing and dropping, but I am can not make it work to delete it.

Answer 1

Use:

mask = df.fillna('').isin(["", "nan", "NaT"])

df = df[~mask.all(axis=1)]