Merge branch 'develop' into feat/kevinjulian/add-buy-signal-name

freqtrade/strategy/interface.py

@@ -62,6 +62,7 @@ class IStrategy(ABC, HyperStrategyMixin):
     _populate_fun_len: int = 0
     _buy_fun_len: int = 0
     _sell_fun_len: int = 0
+    _ft_params_from_file: Dict = {}
     # associated minimal roi
     minimal_roi: Dict
 
@@ -303,6 +304,23 @@ class IStrategy(ABC, HyperStrategyMixin):
         """
         return None
 
+    def custom_stake_amount(self, pair: str, current_time: datetime, current_rate: float,
+                            proposed_stake: float, min_stake: float, max_stake: float,
+                            **kwargs) -> float:
+        """
+        Customize stake size for each new trade. This method is not called when edge module is
+        enabled.
+
+        :param pair: Pair that's currently analyzed
+        :param current_time: datetime object, containing the current datetime
+        :param current_rate: Rate, calculated based on pricing settings in ask_strategy.
+        :param proposed_stake: A stake amount proposed by the bot.
+        :param min_stake: Minimal stake size allowed by exchange.
+        :param max_stake: Balance available for trading.
+        :return: A stake size, which is between min_stake and max_stake.
+        """
+        return proposed_stake
+
     def informative_pairs(self) -> ListPairsWithTimeframes:
         """
         Define additional, informative pair/interval combinations to be cached from the exchange.