Use constant for times

freqtrade/rpc/rpc.py

@@ -13,7 +13,7 @@ from numpy import NAN, int64, mean
 from pandas import DataFrame
 
 from freqtrade.configuration.timerange import TimeRange
-from freqtrade.constants import CANCEL_REASON
+from freqtrade.constants import CANCEL_REASON, DATETIME_PRINT_FORMAT
 from freqtrade.data.history import load_data
 from freqtrade.exceptions import ExchangeError, PricingError
 from freqtrade.exchange import timeframe_to_minutes, timeframe_to_msecs
@@ -649,7 +649,7 @@ class RPC:
             buffer = bufferHandler.buffer[-limit:]
         else:
             buffer = bufferHandler.buffer
-        records = [[datetime.fromtimestamp(r.created).strftime("%Y-%m-%d %H:%M:%S"),
+        records = [[datetime.fromtimestamp(r.created).strftime(DATETIME_PRINT_FORMAT),
                    r.created * 1000, r.name, r.levelname,
                    r.message + ('\n' + r.exc_text if r.exc_text else '')]
                    for r in buffer]

freqtrade/rpc/telegram.py

@@ -102,7 +102,6 @@ class Telegram(RPC):
             CommandHandler('daily', self._daily),
             CommandHandler('count', self._count),
             CommandHandler('locks', self._locks),
-
             CommandHandler(['reload_config', 'reload_conf'], self._reload_config),
             CommandHandler(['show_config', 'show_conf'], self._show_config),
             CommandHandler('stopbuy', self._stopbuy),
@@ -624,7 +623,7 @@ class Telegram(RPC):
             locks = self._rpc_locks()
             message = tabulate([[
                 lock['pair'],
-                lock['lock_end_time'].strftime(DATETIME_PRINT_FORMAT),
+                lock['lock_end_time'],
                 lock['reason']] for lock in locks['locks']],
                 headers=['Pair', 'Until', 'Reason'],
                 tablefmt='simple')