Merge pull request #4584 from withshubh/develop

fix: code quality issues

freqtrade/commands/list_commands.py

@@ -177,7 +177,7 @@ def start_list_markets(args: Dict[str, Any], pairs_only: bool = False) -> None:
             # human-readable formats.
             print()
 
-        if len(pairs):
+        if pairs:
             if args.get('print_list', False):
                 # print data as a list, with human-readable summary
                 print(f"{summary_str}: {', '.join(pairs.keys())}.")

freqtrade/configuration/directory_operations.py

@@ -72,6 +72,5 @@ def copy_sample_files(directory: Path, overwrite: bool = False) -> None:
             if not overwrite:
                 logger.warning(f"File `{targetfile}` exists already, not deploying sample file.")
                 continue
-            else:
-                logger.warning(f"File `{targetfile}` exists already, overwriting.")
+            logger.warning(f"File `{targetfile}` exists already, overwriting.")
         shutil.copy(str(sourcedir / source), str(targetfile))

freqtrade/exchange/common.py

@@ -140,7 +140,7 @@ def retrier(_func=None, retries=API_RETRY_COUNT):
                     logger.warning('retrying %s() still for %s times', f.__name__, count)
                     count -= 1
                     kwargs.update({'count': count})
-                    if isinstance(ex, DDosProtection) or isinstance(ex, RetryableOrderError):
+                    if isinstance(ex, (DDosProtection, RetryableOrderError)):
                         # increasing backoff
                         backoff_delay = calculate_backoff(count + 1, retries)
                         logger.info(f"Applying DDosProtection backoff delay: {backoff_delay}")

freqtrade/exchange/exchange.py

@@ -806,7 +806,7 @@ class Exchange:
 
         # Gather coroutines to run
         for pair, timeframe in set(pair_list):
-            if (not ((pair, timeframe) in self._klines)
+            if (((pair, timeframe) not in self._klines)
                     or self._now_is_time_to_refresh(pair, timeframe)):
                 input_coroutines.append(self._async_get_candle_history(pair, timeframe,
                                                                        since_ms=since_ms))
@@ -958,7 +958,7 @@ class Exchange:
         while True:
             t = await self._async_fetch_trades(pair,
                                                params={self._trades_pagination_arg: from_id})
-            if len(t):
+            if t:
                 # Skip last id since its the key for the next call
                 trades.extend(t[:-1])
                 if from_id == t[-1][1] or t[-1][0] > until:
@@ -990,7 +990,7 @@ class Exchange:
         # DEFAULT_TRADES_COLUMNS: 1 -> id
         while True:
             t = await self._async_fetch_trades(pair, since=since)
-            if len(t):
+            if t:
                 since = t[-1][0]
                 trades.extend(t)
                 # Reached the end of the defined-download period

freqtrade/persistence/models.py

@@ -611,7 +611,7 @@ class LocalTrade():
 
         else:
             # Not used during backtesting, but might be used by a strategy
-            sel_trades = [trade for trade in LocalTrade.trades + LocalTrade.trades_open]
+            sel_trades = list(LocalTrade.trades + LocalTrade.trades_open)
 
         if pair:
             sel_trades = [trade for trade in sel_trades if trade.pair == pair]

freqtrade/plugins/pairlist/PerformanceFilter.py

@@ -2,7 +2,7 @@
 Performance pair list filter
 """
 import logging
-from typing import Any, Dict, List
+from typing import Dict, List
 
 import pandas as pd
 
@@ -15,11 +15,6 @@ logger = logging.getLogger(__name__)
 
 class PerformanceFilter(IPairList):
 
-    def __init__(self, exchange, pairlistmanager,
-                 config: Dict[str, Any], pairlistconfig: Dict[str, Any],
-                 pairlist_pos: int) -> None:
-        super().__init__(exchange, pairlistmanager, config, pairlistconfig, pairlist_pos)
-
     @property
     def needstickers(self) -> bool:
         """

freqtrade/plugins/protections/cooldown_period.py

@@ -1,7 +1,6 @@
 
 import logging
 from datetime import datetime, timedelta
-from typing import Any, Dict
 
 from freqtrade.persistence import Trade
 from freqtrade.plugins.protections import IProtection, ProtectionReturn
@@ -15,9 +14,6 @@ class CooldownPeriod(IProtection):
     has_global_stop: bool = False
     has_local_stop: bool = True
 
-    def __init__(self, config: Dict[str, Any], protection_config: Dict[str, Any]) -> None:
-        super().__init__(config, protection_config)
-
     def _reason(self) -> str:
         """
         LockReason to use

freqtrade/resolvers/strategy_resolver.py

@@ -196,9 +196,9 @@ class StrategyResolver(IResolver):
             strategy._populate_fun_len = len(getfullargspec(strategy.populate_indicators).args)
             strategy._buy_fun_len = len(getfullargspec(strategy.populate_buy_trend).args)
             strategy._sell_fun_len = len(getfullargspec(strategy.populate_sell_trend).args)
-            if any([x == 2 for x in [strategy._populate_fun_len,
-                                     strategy._buy_fun_len,
-                                     strategy._sell_fun_len]]):
+            if any(x == 2 for x in [strategy._populate_fun_len,
+                                    strategy._buy_fun_len,
+                                    strategy._sell_fun_len]):
                 strategy.INTERFACE_VERSION = 1
 
             return strategy