Python cross.cross_above函数代码示例

 def testCrossAboveWithSMA(self):
     ds1 = dataseries.SequenceDataSeries()
     ds2 = dataseries.SequenceDataSeries()
     sma1 = ma.SMA(ds1, 15)
     sma2 = ma.SMA(ds2, 25)
     for i in range(100):
         ds1.append(i)
         ds2.append(50)
         if i == 58:
             self.assertEqual(cross.cross_above(sma1[:], sma2[:], -2, None), 1)
         else:
             self.assertEqual(cross.cross_above(sma1[:], sma2[:], -2, None), 0)

    def onBars(self, bars):
        closeDs = self.getFeed().getDataSeries("petr4").getCloseDataSeries()
        self.sma17 = talibext.MA(closeDs,len(closeDs), timeperiod=5)
        self.sma34 = talibext.MA(closeDs, len(closeDs), timeperiod=20)

        bar_close = bars.getBar(self.__instrument).getClose()
        bar_date = bars.getBar(self.__instrument).getDateTime()

        if self.__position == None:
            if cross.cross_above(self.sma17, self.sma34) > 0:
                self.__position = self.enterLongLimit(self.__instrument, bar_close, 10, True)
                self.stop_loss = bar_close * 0.97
                self.stop_gain = bar_close * 1.05
                self.last_buy_price = bar_close
                self.last_buy_date = bar_date
                print "%s - try buy at %6.2f - stop loss at %6.2f / stop gain at %6.2f"%(bar_date, bar_close, self.stop_loss, self.stop_gain)
        elif bar_close <= self.stop_loss:
            stop_execute = self.stop_loss * 0.995
            self.__position.exit(self, stop_execute, stop_execute)
            print "%s - stoppe d (loss) at %6.2f  - stop loss: %6.2f"%(bar_date, stop_execute, self.stop_loss)
            self.stop_loss = 0
            self.stop_gain = 0
            self.last_buy_price = 0
        elif bar_close >= self.stop_gain and self.stop_gain > 0:
            self.stop_loss = self.stop_gain * 0.99
            self.stop_gain = self.stop_gain * 1.05
            print "%s - at %6.2f raised stop loss to %6.2f  and stop gain to %6.2f"%(bar_date, bar_close, self.stop_loss, self.stop_gain)
        elif (bar_date - self.last_buy_date).days > 60:
            self.__position.cancelExit()
            print "%s - trend timed out"%(bar_date)
            self.stop_loss = 0
            self.stop_gain = 0
            self.last_buy_price = 0
            self.last_buy_date = 0

 def onBars(self, bars):
     if self.__position != None and self.__position.getReturn() < -0.05:
         self.__position.exitMarket()
         
     # If a position was not opened, check if we should enter a long position.
     if self.__position is None:
         ds = self.getFeed().getDataSeries(self.__instrument).getCloseDataSeries()
         if self.touchBottom(): # and LINEARREG(ds, 20)[1] > 0:
             shares = int(self.getBroker().getCash() * 0.9 / bars[self.__instrument].getPrice())
             # Enter a buy market order. The order is good till canceled.
             self.__position = self.enterShort(self.__instrument, shares, True)
             self.__pos_kind = "Short"
             print str(bars[self.__instrument].getDateTime()) + " " + "buy Short"
         elif self.touchTop(): # and LINEARREG(ds, 20)[1] < 0:
             shares = int(self.getBroker().getCash() * 0.9 / bars[self.__instrument].getPrice())
             # Enter a buy market order. The order is good till canceled.
             self.__position = self.enterLong(self.__instrument, shares, True)
             self.__pos_kind = "Long"
             print str(bars[self.__instrument].getDateTime()) + " " + "buy Long"
         return
     # Check if we have to exit the position.
     elif (not self.__position.exitActive()):
         if self.__pos_kind == "Long" and (cross.cross_below(self.__prices, self.__sma, -2) > 0 or self.touchBottom()):
             self.__position.exitMarket() #Long exit
             print str(bars[self.__instrument].getDateTime()) + " " + "exit " + self.__pos_kind
         elif self.__pos_kind == "Short" and (cross.cross_above(self.__prices, self.__sma, -2) > 0 or self.touchTop()):
             self.__position.exitMarket() #Short exit
             print str(bars[self.__instrument].getDateTime()) + " " + "exit " + self.__pos_kind

    def onBars(self, bars):
        for instrument, bar in bars.items():
            infoout = None
            if cross.cross_below(self.__shorttrix[instrument],
                                 self.__longtrix[instrument]) > 0:
                # If the derivative crosses above zero (deriv - -> +),
                # buy the instrument.
                now_cash, now_shares = self.inventory(instrument)
                buyqty = self.buyamount(
                    instrument, bar.getClose(), bar.getVolume(), now_cash, .2)
                self.marketOrder(instrument, buyqty)
                infoout = 'Order %d shares of %s @$%.2f. COH $%.2f' % (
                    buyqty, instrument, bar.getClose(), now_cash)

            elif cross.cross_above(self.__shorttrix[instrument],
                                   self.__longtrix[instrument]) > 0:
                # If the derivative crosses below zero (deriv + -> -),
                # sell the instrument.
                now_cash, now_shares = self.inventory(instrument)
                if now_shares > 0:
                    # Sell all shares
                    self.marketOrder(instrument, -now_shares)
                    infoout = 'Sell %d shares of %s @$%.2f. COH $%.2f' % (
                        now_shares, instrument, bar.getClose(), now_cash)
            if infoout and self.printinfo:
                self.info(infoout)

	def onBars(self, bars):
		if bars.getBar(self.__lead):
			if cross.cross_above(self.__adjClose, self.__slowSMA) == 1 and self.__pos == None:
				shares = self.__calculatePosSize()
				if shares:
					self.__pos = self.enterLong(self.__lag, shares)
			elif cross.cross_below(self.__adjClose, self.__fastSMA) == 1 and self.__pos != None:
				self.exitPosition(self.__pos)

    def onBars(self, bars):
        shares = self.getBroker().getShares(self.__instrument)

        # If a position was not opened, check if we should enter a long position.
        if shares == 0:
            if cross.cross_above(self.__closeDS, self.__sma) > 0:
                # Enter a buy market order for 10 shares. The order is good till canceled.
                self.order(self.__instrument, 10, goodTillCanceled=True)

	def onBars(self, bars):
		if self.__position is None:
			if cross.cross_above(self.__prices, self.__sma) >0:
				shares = int(self.getBroker().getCash() * 0.9 / bars[self.__instrument].getPrice())
				self.__position = self.enterLong(self.__instrument, shares, True)
		
		elif not self.__position.exitActive() and cross.cross_below(self.__prices,self.__sma) >0:
			self.__position.exitMarket()

 def onBars(self, bars):
     # If a position was not opened, check if we should enter a long position.
     if self.__position == None:
         if cross.cross_above(self.__adjClose, self.__sma) > 0:
             # Enter a buy market order for 10 shares. The order is good till canceled.
             self.__position = self.enterLong(self.__instrument, 10, True)
     # Check if we have to exit the position.
     elif cross.cross_below(self.__adjClose, self.__sma) > 0:
         self.__position.exit()

 def onBars(self, bars):
     # If a position was not opened, check if we should enter a long position.
     if self.__position is None:
         if cross.cross_above(self.__prices, self.__sma) > 0:
             shares = int(self.getBroker().getCash() * 0.9 / bars[self.__instrument].getPrice())
             # Enter a buy market order. The order is good till canceled.
             self.__position = self.enterLong(self.__instrument, shares, True)
     # Check if we have to exit the position.
     elif not self.__position.exitActive() and cross.cross_below(self.__prices, self.__exit_sma) > 0:
         self.__position.exitMarket()

 def enterLongSignal (self) :
     if self.__UpperBand[-1-self.__circ] is None:
         return False
     m1 = 0
     for i in range(self.__circ):
         if self.__macd[-i-1] <= self.__LowerBand[-i-2]:
             m1 += 1
     if m1 >= self.__circ-1 and cross.cross_above(self.__macd,self.__LowerBand)>0:
         return True
     else:
         return False

 def exitShortSignal(self):
     if self.__UpperBand[-1-self.__circ] is None:
         return False
     m1 = 0
     for i in range(self.__circ):
         if self.__close[-i-1] <= self.__LowerBand[-i-2]:
             m1 += 1
     if m1 >= self.__circ-1 and cross.cross_above(self.__close,self.__LowerBand)>0:
         return True
     else:
         return False

 def handle_data(self,bars):
     for instrument in bars.getInstruments():
         # If a position was not opened, check if we should enter a long position.
         if self.__position[instrument] is None:
             if cross.cross_above(self.__prices[instrument], self.__sma[instrument]) > 0:
                 shares = int(self.getBroker().getCash() * 0.9 / bars[instrument].getPrice())
                 # Enter a buy market order. The order is good till canceled.
                 self.__position[instrument] = self.enterLong(instrument, shares, True)
         # Check if we have to exit the position.
         elif not self.__position[instrument].exitActive() and cross.cross_below(self.__prices[instrument], self.__sma[instrument]) > 0:
             self.__position[instrument].exitMarket()

 def onBars(self, bars):
     inst0_cond = cross.cross_above(self.__prices[self.__instrumentList[0]], self.__sma[self.__instrumentList[0]])
     inst2_cond = cross.cross_above(self.__prices[self.__instrumentList[2]], self.__sma[self.__instrumentList[2]])
     # If a position was not opened, check if we should enter a long position.
     if not self.__positions:
         if inst0_cond > 0 or inst2_cond > 0:
             if inst0_cond > 0:
                 shares_0 = int(self.getBroker().getCash() * 0.6 / bars[self.__instrumentList[0]].getPrice())
                 shares_2 = int(self.getBroker().getCash() * 0.3 / bars[self.__instrumentList[2]].getPrice())
             else:
                 shares_0 = int(self.getBroker().getCash() * 0.3 / bars[self.__instrumentList[0]].getPrice())
                 shares_2 = int(self.getBroker().getCash() * 0.6 / bars[self.__instrumentList[2]].getPrice())
             # Enter a buy market order. The order is good till canceled.
             print "%%%%%$$$$: ", shares_0, shares_2
             self.__positions[self.__instrumentList[0]] = self.enterLong(self.__instrumentList[0], int(shares_0), True)
             self.__positions[self.__instrumentList[2]] =self.enterLong(self.__instrumentList[2], int(shares_2), True)
             self.__activePosition = self.__instrumentList[0]
     # Check if we have to exit the position.
     elif cross.cross_below(self.__prices[self.__activePosition], self.__sma[self.__activePosition]) > 0:
         self.__position[self.__instrumentList[0]].exitMarket()
         self.__position[self.__instrumentList[2]].exitMarket()

    def testCrossAboveMany(self):
        count = 100
        values1 = [-1 if i % 2 == 0 else 1 for i in range(count)]
        values2 = [0 for i in range(count)]

        # Check first value
        self.assertEqual(cross.cross_above(values1, values2, 0, 0), 0)

        # Check every 2 values.
        period = 2
        for i in range(1, count):
            if i % 2 == 0:
                self.assertEqual(cross.cross_above(values1, values2, i - period + 1, i + 1), 0)
            else:
                self.assertEqual(cross.cross_above(values1, values2, i - period + 1, i + 1), 1)

        # Check every 4 values.
        period = 4
        for i in range(3, count):
            if i % 2 == 0:
                self.assertEqual(cross.cross_above(values1, values2, i - period + 1, i + 1), 1)
            else:
                self.assertEqual(cross.cross_above(values1, values2, i - period + 1, i + 1), 2)

        # Check for all values.
        self.assertEqual(cross.cross_above(values1, values2, 0, count), count / 2)

 def onBars(self, bars):        
     if self.__position is None:            
         if cross.cross_above(self.__Close, self.__sma) > 0:
             self.buyPrice = bars.getBar("btc").getClose()
             
             quantity = self.getBroker().getCash() / bars.getBar("btc").getClose() * 0.99
             self.__position = self.enterLong(self.__instrument, quantity)
             
             self.numOrder += 1
     elif cross.cross_below(self.__Close, self.__sma) > 0:
         # if (abs(self.buyPrice - bars.getBar("btc").getClose()) > 0.002 * (bars.getBar("btc").getClose())):
         if (abs(self.buyPrice - bars.getBar("btc").getClose()) > 10):            
             self.__position.exitMarket()