negative_reason.py

print(df.isnull().sum())
pos_sum = df[df['airline_sentiment']=='positive']
neu_sum = df[df['airline_sentiment']=='neutral']
neg_sum = df[df['airline_sentiment']=='negative']
zero_sum = df[df['negativereason_confidence']==0]
print('------------------------------------------------------')
print('total_non_neg = ',len(pos_sum)+len(neu_sum))
print('total zeros in neg_confidence = ',len(zero_sum))
print('------------------------------------------------------')
print('total_rows = ',len(pos_sum)+len(neu_sum)+len(neg_sum))