| 121 | round(self.low,2),self.volume] |
| 122 | |
| 123 | class MarketSimulator(object): |
| 124 | def __init__(self): |
| 125 | self.stocks = { } |
| 126 | self.prices = { } |
| 127 | self.time = 0 |
| 128 | self.observers = [] |
| 129 | def register(self,observer): |
| 130 | self.observers.append(observer) |
| 131 | |
| 132 | def publish(self,record): |
| 133 | for obj in self.observers: |
| 134 | obj.update(record) |
| 135 | def add_history(self,filename): |
| 136 | hist = read_history(filename) |
| 137 | for record in hist: |
| 138 | if record[0] not in self.stocks: |
| 139 | self.stocks[record[0]] = StockTrack(record[0]) |
| 140 | self.stocks[record[0]].add_data(record) |
| 141 | |
| 142 | def reset(self,time): |
| 143 | self.time = time |
| 144 | for s in self.stocks.values(): |
| 145 | s.reset(time) |
| 146 | |
| 147 | # Run forever. Dt is in seconds |
| 148 | def run(self,dt): |
| 149 | for s in self.stocks: |
| 150 | self.prices[s] = self.stocks[s].price |
| 151 | self.publish(self.stocks[s].make_record()) |
| 152 | while self.time < 1000: |
| 153 | for s in self.stocks: |
| 154 | self.stocks[s].incr(dt/60.0) # Increment is in minutes |
| 155 | if self.stocks[s].price != self.prices[s]: |
| 156 | self.prices[s] = self.stocks[s].price |
| 157 | self.publish(self.stocks[s].make_record()) |
| 158 | time.sleep(dt) |
| 159 | self.time += (dt/60.0) |
| 160 | |
| 161 | |
| 162 | class BasicPrinter(object): |