I have this dataset for personal exercise, there are quite a lot of missing values in the dataset and since I wanted to do a model using this dataset, I tried to use imputation as follows:
flight_2['WORK_PROVINCE'].fillna(flight_2['WORK_PROVINCE'].mode(), inplace=True)
but when I did the fillna it didn't change/replace my missing values, when I check it:
flight_2['WORK_PROVINCE'].isna().sum()
the missing values stays at 3240
I'm expecting the missing values will be replaced by my fillna which is not