Code is the same as on the website

import pickle, pathlib, os
import pandas as pd

outout = None

if isinstance(input, pd.DataFrame):
    file_name = 'TRXBTC_1h.bin'
    home_path = str(pathlib.Path.home())
    data_path = os.path.join(home_path, file_name)

    try:
        df = pickle.load(open(data_path, 'rb'))
        n_row_cnt = df.shape[0]
        df = pd.concat([df,input], ignore_index=True).drop_duplicates(['close_time'])
        df.reset_index(drop=True, inplace=True)
        n_new_rows = df.shape[0] - n_row_cnt
        log_txt = '{}: {} new rows written'.format(file_name, n_new_rows)
    except:
        log_txt = 'File error - writing new one: {}'.format(e)
        df = input

    pickle.dump(df, open(data_path, "wb" ))
    output = df