JSONDecodeError: Expecting value

[alitekdemir]

Description

I'm trying the RSI code in colab and desktop pc, but I'm getting this error.

#RSI KODLARI
import blankly


def price_event(price, symbol, state: blankly.StrategyState):
    """ This function will give an updated price every 15 seconds from our definition below """
    state.variables['history'].append(price) # appends to the deque of historical prices
    rsi = blankly.indicators.rsi(state.variables['history'])
    if rsi[-1] < 30 and not state.variables['owns_position']:
        buy = int(state.interface.cash / price)
        state.interface.market_order(symbol, side='buy', size=buy)
        state.variables['owns_position'] = True
    elif rsi[-1] > 70 and state.variables['owns_position']:
        curr_value = int(state.interface.account[state.base_asset].available)
        state.interface.market_order(symbol, side='sell', size=curr_value)
        state.variables['owns_position'] = False

def init(symbol, state: blankly.StrategyState):
    # Download price data to give context to the algo
    state.variables['history'] = state.interface.history(symbol, to=150, return_as='deque')['close']
    state.variables['owns_position'] = False

if __name__ == "__main__":
    exchange = blankly.Binance(portfolio_name="ATD Binance")
    strategy = blankly.Strategy(exchange)
    strategy.add_price_event(price_event, symbol='ETH-BUSD', resolution='15m', init=init)

    # Start the strategy. This will begin each of the price event ticks
    # strategy.start()
    # Or backtest using this
    results = strategy.backtest(to='1y', initial_values={'BUSD': 1000})
    print(results)

Error (if applicable)

JSONDecodeError: Expecting value: line 10 column 5 (char 364)

[EmersonDove]

If I were to guess I think your backtest.json file has invalid syntax.

Try copying and pasting the backtest.json into here: https://jsonformatter.org/json-parser

[alitekdemir]

yes you are right.

    "assets": [
      [ "BTC-USDT", 1483218000, 1642335680, 300.0 ],
      [ "BTC-USDT", 1483218000, 1642335680, 900.0 ],
      [ "BTC-USDT", 1483218000, 1642335680, 1800.0 ],
      [ "BTC-USDT", 1483218000, 1642335680, 3600.0 ],
      [ "BTC-USDT", 1483218000, 1642335680, 14400.0 ],
      [ "BTC-USDT", 1483218000, 1642335680, 86400.0 ],
      [ "ETH-USDT", 1483218000, 1642335680, 300.0 ],
      [ "ETH-USDT", 1483218000, 1642335680, 900.0 ],
      [ "ETH-USDT", 1483218000, 1642335680, 1800.0 ],
      [ "ETH-USDT", 1483218000, 1642335680, 3600.0 ],
      [ "ETH-USDT", 1483218000, 1642335680, 14400.0 ],
      [ "ETH-USDT", 1483218000, 1642335680, 86400.0 ], < this is my fault, i added this last comma with copy paste
    ]