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exchange_rate: minor clean-up

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based on mhsmith/electrum@7ed3f032dd
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SomberNight 2019-03-22 16:48:47 +01:00
parent 95a122596e
commit 5cbf54d23a
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1 changed files with 12 additions and 4 deletions
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16
electrum/exchange_rate.py
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@ -21,6 +21,11 @@ from .network import Network
from .simple_config import SimpleConfig
DEFAULT_ENABLED = False
DEFAULT_CURRENCY = "EUR"
DEFAULT_EXCHANGE = "BitcoinAverage" # default exchange should ideally provide historical rates
# See https://en.wikipedia.org/wiki/ISO_4217
CCY_PRECISIONS = {'BHD': 3, 'BIF': 0, 'BYR': 0, 'CLF': 4, 'CLP': 0,
'CVE': 0, 'DJF': 0, 'GNF': 0, 'IQD': 3, 'ISK': 0,
@ -509,7 +514,7 @@ class FxThread(ThreadJob):
await self.exchange.update_safe(self.ccy)
def is_enabled(self):
return bool(self.config.get('use_exchange_rate'))
return bool(self.config.get('use_exchange_rate', DEFAULT_ENABLED))
def set_enabled(self, b):
self.config.set_key('use_exchange_rate', bool(b))
@ -535,10 +540,10 @@ class FxThread(ThreadJob):
def get_currency(self):
'''Use when dynamic fetching is needed'''
return self.config.get("currency", "EUR")
return self.config.get("currency", DEFAULT_CURRENCY)
def config_exchange(self):
return self.config.get('use_exchange', 'BitcoinAverage')
return self.config.get('use_exchange', DEFAULT_EXCHANGE)
def show_history(self):
return self.is_enabled() and self.get_history_config() and self.ccy in self.exchange.history_ccys()
@ -554,7 +559,7 @@ class FxThread(ThreadJob):
self.network.asyncio_loop.call_soon_threadsafe(self._trigger.set)
def set_exchange(self, name):
class_ = globals().get(name, BitcoinAverage)
class_ = globals().get(name) or globals().get(DEFAULT_EXCHANGE)
self.print_error("using exchange", name)
if self.config_exchange() != name:
self.config.set_key('use_exchange', name, True)
@ -624,3 +629,6 @@ class FxThread(ThreadJob):
from .util import timestamp_to_datetime
date = timestamp_to_datetime(timestamp)
return self.history_rate(date)
assert globals().get(DEFAULT_EXCHANGE), f"default exchange {DEFAULT_EXCHANGE} does not exist"