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POpython object in dictionary
 

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    <p>I am trying to save the object <code>candle</code> in the dictionary <code>candlebuffer</code>, however it gives me the error below. I am struggling; what is incorrect with my syntax?</p> <pre><code> class Observer: def __init__(self): self.listeners = [] def attach(self, listener): if not listener in self.listeners: self.listeners.append(listener) def notify(self, event): for listener in self.listeners: listener.update(event) class CandleGenerator(Observer): def __init__(self,freq): Observer.__init__(self) self.freq = freq self.candle = Candle() def update(self,tick): self.candle.addTick(tick,self.freq) if keyfunc(self.candle.timestamp,self.freq) != self.candle.ref_timestamp: self.notify(self.candle) self.candle = Candle() class CandlePrinter: def update(self, candle): print "Bougie&gt;&gt;&gt;&gt;&gt;&gt; freq: %s %s %s %s %s %s %s %s %s " % (candle.freq,candle.last_price,candle.volume, candle.timestamp, candle.ref_timestamp, candle.open_price,candle.high_price,candle.low_price, candle.last_price) class CandleBuffer: def __init__(self,candle): self.candlebuffer={0: candle} def update(self,candle): self.candlebuffer[candle.timestamp]= candle print self.candlebuffer print('begin') tickGenerator = TickGenerator() candleGenerator1 = CandleGenerator(1) candlePrinter = CandlePrinter() candleBuffer = CandleBuffer(5) tickGenerator.attach(candleGenerator1) candleGenerator1.attach(candlePrinter) candleGenerator1.attach(candleBuffer) tickGenerator.generate() </code></pre> <p>It gives the following output:</p> <pre><code>TypeError: __init__() takes exactly 2 arguments (1 given) </code></pre>
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    1. COYou are not showing us the code that actually causes the error. The stack trace tells you the exact line that it occurs. Please give the *whole* stack trace, not just the error message, and include the actual line with the error.
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      1. USGareth Latty
    2. COIf that is 2.x then your class should inherit from `object` to support the "new" style classes. Could you show more code? i.e. the code using that class.
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    3. COthe error comes from this execution line indeed : candleBuffer = CandleBuffer()
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      1. USmatel
 

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