import pandas as pd


with open('feautures_90.txt', 'r') as f:
    for line in f.readlines():
        df = pd.read_csv(line.rstrip('n'), sep=',')
        df.index = ['feature_' + str(i+1) for i in range(len(df.index))]
        num_det = str(line[line.find('det_') + 4:line.find('.csv')])
        num_def = str(line[line.find('defect№_') + 8:line.find('_time_')])

        df.rename({'detector_' + num_det: 'A_' + num_def + '_' + num_det}, axis=1)
        df = df.drop('row', 1)
        tf = df.T



        with open('feautures_9.csv', 'a') as m:
            tf.append(tf.iloc[1:, :])
            tf.to_csv(m)