added 1s timeframe changes and requirements

freqtrade/exchange/exchange.py

@@ -590,9 +590,6 @@ class Exchange:
             raise OperationalException(
                 f"Invalid timeframe '{timeframe}'. This exchange supports: {self.timeframes}")
 
-        if timeframe and timeframe_to_minutes(timeframe) < 1:
-            raise OperationalException("Timeframes < 1m are currently not supported by Freqtrade.")
-
     def validate_ordertypes(self, order_types: Dict) -> None:
         """
         Checks if order-types configured in strategy/config are supported

requirements.txt

@@ -2,7 +2,7 @@ numpy==1.23.2
 pandas==1.4.4
 pandas-ta==0.3.14b
 
-ccxt==1.93.3
+ccxt==1.93.14
 # Pin cryptography for now due to rust build errors with piwheels
 cryptography==37.0.4
 aiohttp==3.8.1

tests/exchange/test_exchange.py

@@ -907,12 +907,7 @@ def test_validate_timeframes_failed(default_conf, mocker):
     with pytest.raises(OperationalException,
                        match=r"Invalid timeframe '3m'. This exchange supports.*"):
         Exchange(default_conf)
-    default_conf["timeframe"] = "15s"
-
-    with pytest.raises(OperationalException,
-                       match=r"Timeframes < 1m are currently not supported by Freqtrade."):
-        Exchange(default_conf)
-
+    
 
 def test_validate_timeframes_emulated_ohlcv_1(default_conf, mocker):
     default_conf["timeframe"] = "3m"