class WeatherStrategy(Strategy):
 holding_period = 30 # You can set a default value here
 delay = 10
 
 def init(self):
 self.entry_time = None
 self.signal_time = None # To store the time of the signal
 def next(self):
 signal = self.data['trade_signal']
 current_time = self.data.index[-1]
 s = self.data.size[-1]
 if not self.position:
 if signal == 1 and self.signal_time is None:
 self.signal_time = current_time # Record the time of the signal
 print(f"Buy signal at {current_time}")
 if self.signal_time is not None and (current_time - self.signal_time) >= pd.Timedelta(minutes=self.delay):
 self.signal_time = None # Reset the signal time
 self.buy(size=s)
 self.entry_time = current_time
 print(f"Buy at {current_time}")
 if signal == -1 and self.signal_time is None:
 self.signal_time = current_time # Record the time of the signal
 print(f"Sell signal at {current_time}")
 if self.signal_time is not None and (current_time - self.signal_time) >= pd.Timedelta(minutes=self.delay):
 self.signal_time = None # Reset the signal time
 self.sell(size=s) # Corrected: This should be sell for short position
 self.entry_time = current_time
 print(f"Sell at {current_time}")
 else:
 time_in_trade = current_time - self.entry_time
 if (self.position.is_long and time_in_trade >= pd.Timedelta(minutes=self.holding_period)):
 self.position.close()
 print(f"Close long position at {current_time}")
 if (self.position.is_short and time_in_trade >= pd.Timedelta(minutes=self.holding_period)):
 self.position.close()
 print(f"Close short position at {current_time}")