#delete rows with minus frases
minus = 'Продам,продам,руб,рублей'
minusFrase = minus.split(',')
correct_comments=[]
for index, row in df1.iterrows():
    i = 0
    for minus_word in minusFrase:
        if minus_word in row['text']:
            i = i + 1
            if i < 0:
                correct_comments.append((row['date'],row['text'],row['mark']))
print(correct_comments)