separate core and gui in different modules

lib/exchange_rate.py

@@ -1,59 +0,0 @@
-from PyQt4.QtCore import SIGNAL
-import decimal
-import httplib
-import json
-import threading
-
-class Exchanger(threading.Thread):
-
-    def __init__(self, parent):
-        threading.Thread.__init__(self)
-        self.daemon = True
-        self.parent = parent
-        self.quote_currencies = None
-        self.lock = threading.Lock()
-        # Do price discovery
-        self.start()
-
-    def exchange(self, btc_amount, quote_currency):
-        with self.lock:
-            if self.quote_currencies is None:
-                return None
-            quote_currencies = self.quote_currencies.copy()
-        if quote_currency not in quote_currencies:
-            return None
-        return btc_amount * quote_currencies[quote_currency]
-
-    def run(self):
-        self.discovery()
-
-    def discovery(self):
-        try:
-            connection = httplib.HTTPConnection('blockchain.info')
-            connection.request("GET", "/ticker")
-        except:
-            return
-        response = connection.getresponse()
-        if response.reason == httplib.responses[httplib.NOT_FOUND]:
-            return
-        response = json.loads(response.read())
-        quote_currencies = {}
-        try:
-            for r in response:
-                quote_currencies[r] = self._lookup_rate(response, r)
-            with self.lock:
-                self.quote_currencies = quote_currencies
-            self.parent.emit(SIGNAL("refresh_balance()"))
-        except KeyError:
-            pass
-            
-    def get_currencies(self):
-        return [] if self.quote_currencies == None else sorted(self.quote_currencies.keys())
-
-    def _lookup_rate(self, response, quote_id):
-        return decimal.Decimal(str(response[str(quote_id)]["15m"]))
-
-if __name__ == "__main__":
-    exch = Exchanger(("BRL", "CNY", "EUR", "GBP", "RUB", "USD"))
-    print exch.exchange(1, "EUR")
-