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Exchange: f-strings into use

This commit is contained in:
Samuel Husso 2018-06-04 14:26:22 +03:00
parent 1e1be6bc3f
commit 18e3090379
1 changed files with 37 additions and 58 deletions
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95
freqtrade/exchange/__init__.py
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@ -59,7 +59,7 @@ def init_ccxt(exchange_config: dict) -> ccxt.Exchange:
name = exchange_config['name']
if name not in ccxt.exchanges:
raise OperationalException('Exchange {} is not supported'.format(name))
raise OperationalException(f'Exchange {name} is not supported')
try:
api = getattr(ccxt, name.lower())({
'apiKey': exchange_config.get('key'),
@ -69,7 +69,7 @@ def init_ccxt(exchange_config: dict) -> ccxt.Exchange:
'enableRateLimit': True,
})
except (KeyError, AttributeError):
raise OperationalException('Exchange {} is not supported'.format(name))
raise OperationalException(f'Exchange {name} is not supported')
return api
@ -118,11 +118,10 @@ def validate_pairs(pairs: List[str]) -> None:
# TODO: add a support for having coins in BTC/USDT format
if not pair.endswith(stake_cur):
raise OperationalException(
'Pair {} not compatible with stake_currency: {}'.format(pair, stake_cur)
)
f'Pair {pair} not compatible with stake_currency: {stake_cur}')
if pair not in markets:
raise OperationalException(
'Pair {} is not available at {}'.format(pair, get_name()))
f'Pair {pair} is not available at {get_name()}')
def exchange_has(endpoint: str) -> bool:
@ -138,7 +137,7 @@ def exchange_has(endpoint: str) -> bool:
def buy(pair: str, rate: float, amount: float) -> Dict:
if _CONF['dry_run']:
global _DRY_RUN_OPEN_ORDERS
order_id = 'dry_run_buy_{}'.format(randint(0, 10**6))
order_id = f'dry_run_buy_{randint(0, 10**6)}'
_DRY_RUN_OPEN_ORDERS[order_id] = {
'pair': pair,
'price': rate,
@ -156,20 +155,17 @@ def buy(pair: str, rate: float, amount: float) -> Dict:
return _API.create_limit_buy_order(pair, amount, rate)
except ccxt.InsufficientFunds as e:
raise DependencyException(
'Insufficient funds to create limit buy order on market {}.'
'Tried to buy amount {} at rate {} (total {}).'
'Message: {}'.format(pair, amount, rate, rate*amount, e)
)
f'Insufficient funds to create limit buy order on market {pair}.'
f'Tried to buy amount {amount} at rate {rate} (total {rate*amount}).'
f'Message: {e}')
except ccxt.InvalidOrder as e:
raise DependencyException(
'Could not create limit buy order on market {}.'
'Tried to buy amount {} at rate {} (total {}).'
'Message: {}'.format(pair, amount, rate, rate*amount, e)
)
f'Could not create limit buy order on market {pair}.'
f'Tried to buy amount {amount} at rate {rate} (total {rate*amount}).'
f'Message: {e}')
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not place buy order due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not place buy order due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -177,7 +173,7 @@ def buy(pair: str, rate: float, amount: float) -> Dict:
def sell(pair: str, rate: float, amount: float) -> Dict:
if _CONF['dry_run']:
global _DRY_RUN_OPEN_ORDERS
order_id = 'dry_run_sell_{}'.format(randint(0, 10**6))
order_id = f'dry_run_sell_{randint(0, 10**6)}'
_DRY_RUN_OPEN_ORDERS[order_id] = {
'pair': pair,
'price': rate,
@ -194,20 +190,17 @@ def sell(pair: str, rate: float, amount: float) -> Dict:
return _API.create_limit_sell_order(pair, amount, rate)
except ccxt.InsufficientFunds as e:
raise DependencyException(
'Insufficient funds to create limit sell order on market {}.'
'Tried to sell amount {} at rate {} (total {}).'
'Message: {}'.format(pair, amount, rate, rate*amount, e)
)
f'Insufficient funds to create limit sell order on market {pair}.'
f'Tried to sell amount {amount} at rate {rate} (total {rate*amount}).'
f'Message: {e}')
except ccxt.InvalidOrder as e:
raise DependencyException(
'Could not create limit sell order on market {}.'
'Tried to sell amount {} at rate {} (total {}).'
'Message: {}'.format(pair, amount, rate, rate*amount, e)
)
f'Could not create limit sell order on market {pair}.'
f'Tried to sell amount {amount} at rate {rate} (total {rate*amount}).'
f'Message: {e}')
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not place sell order due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not place sell order due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -222,8 +215,7 @@ def get_balance(currency: str) -> float:
balance = balances.get(currency)
if balance is None:
raise TemporaryError(
'Could not get {} balance due to malformed exchange response: {}'.format(
currency, balances))
f'Could not get {currency} balance due to malformed exchange response: {balances}')
return balance['free']
@ -243,8 +235,7 @@ def get_balances() -> dict:
return balances
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not get balance due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not get balance due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -255,13 +246,11 @@ def get_tickers() -> Dict:
return _API.fetch_tickers()
except ccxt.NotSupported as e:
raise OperationalException(
'Exchange {} does not support fetching tickers in batch.'
'Message: {}'.format(_API.name, e)
)
f'Exchange {_API.name} does not support fetching tickers in batch.'
f'Message: {e}')
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not load tickers due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not load tickers due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -282,8 +271,7 @@ def get_ticker(pair: str, refresh: Optional[bool] = True) -> dict:
return data
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not load ticker history due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not load ticker history due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
else:
@ -327,15 +315,13 @@ def get_ticker_history(pair: str, tick_interval: str, since_ms: Optional[int] =
return data
except ccxt.NotSupported as e:
raise OperationalException(
'Exchange {} does not support fetching historical candlestick data.'
'Message: {}'.format(_API.name, e)
)
f'Exchange {_API.name} does not support fetching historical candlestick data.'
f'Message: {e}')
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not load ticker history due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not load ticker history due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException('Could not fetch ticker data. Msg: {}'.format(e))
raise OperationalException(f'Could not fetch ticker data. Msg: {e}')
@retrier
@ -347,12 +333,10 @@ def cancel_order(order_id: str, pair: str) -> None:
return _API.cancel_order(order_id, pair)
except ccxt.InvalidOrder as e:
raise DependencyException(
'Could not cancel order. Message: {}'.format(e)
)
f'Could not cancel order. Message: {e}')
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not cancel order due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not cancel order due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -369,12 +353,10 @@ def get_order(order_id: str, pair: str) -> Dict:
return _API.fetch_order(order_id, pair)
except ccxt.InvalidOrder as e:
raise DependencyException(
'Could not get order. Message: {}'.format(e)
)
f'Could not get order. Message: {e}')
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not get order due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not get order due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -393,8 +375,7 @@ def get_trades_for_order(order_id: str, pair: str, since: datetime) -> List:
except ccxt.NetworkError as e:
raise TemporaryError(
'Could not get trades due to networking error. Message: {}'.format(e)
)
f'Could not get trades due to networking error. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -416,8 +397,7 @@ def get_markets() -> List[dict]:
return _API.fetch_markets()
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not load markets due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not load markets due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)
@ -442,8 +422,7 @@ def get_fee(symbol='ETH/BTC', type='', side='', amount=1,
price=price, takerOrMaker=taker_or_maker)['rate']
except (ccxt.NetworkError, ccxt.ExchangeError) as e:
raise TemporaryError(
'Could not get fee info due to {}. Message: {}'.format(
e.__class__.__name__, e))
f'Could not get fee info due to {e.__class__.__name__}. Message: {e}')
except ccxt.BaseError as e:
raise OperationalException(e)