Run black on the file.

Author: drvinceknight

axelrod/strategies/titfortat.py

@@ -447,6 +447,7 @@ def strategy(self, opponent: Player) -> Action:
 
         return C
 
+
 class Gradual(Player):
     """
     Similar to OriginalGradual, this is a player that punishes defections with a
@@ -493,7 +494,6 @@ def strategy(self, opponent: Player) -> Action:
         if len(self.history) == 0:
             return C
 
-
         if self.punish_count > 0:
             self.punish_count -= 1
             return D
@@ -509,7 +509,6 @@ def strategy(self, opponent: Player) -> Action:
         return C
 
 
-
 @TrackHistoryTransformer(name_prefix=None)
 class ContriteTitForTat(Player):
     """