jesse-bot multi-symbol-download allows you to download multiple symbols in a loop without the need of manually inserting each symbol

get_candles.py

# add this file to YOUR_PROJECT_ROOT
from YOUR_PROJECT_ROOT.symbols_ import symbols
from jesse import register_custom_exception_handler
from jesse.modes import import_candles_mode
from jesse.services import db
from jesse.routes import router


def get_candles(start_date, routes_, extra_candles_):
    router.set_routes(routes_)
    router.set_extra_candles(extra_candles_)

    for i in symbols:
        try:
            tmfrm = [x[2] for x in routes_ if x[1] == i][0]
            print('Downloading:', i, tmfrm)

            register_custom_exception_handler()
            import_candles_mode.run(exchange='Binance', symbol=i, start_date_str=start_date, skip_confirmation=True)
            db.close_connection()
        except IndexError:
            print(f'Please add {i} to routes_')
        except Exception as e:
            print(e)


if __name__ == '__main__':
    # Set start_date and timeframe  than run python3 get_candles.py
    start_date = '2020-01-01'
    timeframe = '4h'

    get_candles(start_date=start_date, routes_=[('Binance', x, timeframe, 'YOURS_STRATEGY') for x in symbols], extra_candles_=[])

symboles_.py

# add this file to YOUR_PROJECT_ROOT and insert your desired symbols
symbols = ["BTC-USDT", "ETH-USDT",add_your_symbols...]