Hi there,
I want to select all the rows in my data frame where 'finished_processing_date' is not null.
I know I can do something like this to count the null fields
df_not_finished_processing = df[df['finished_processing_date'].isnull()];
df_not_finished_processing.count()
but what about doing the opposite? Selecting all rows that the field is not null.
Comment From: TomAugspurger
.notnull
or use ~
on the mask you have to flip it.
FYI: the pandas tag on stackoverflow is the preferred forum for asking usage questions.
Comment From: ghost
exactly what I was looking for.