Merge pull request #953 from Chadys/802

Automatically set strategy classes (and transformers) __repr__ to include parameters. #802

Author: drvinceknight

.gitignore

@@ -102,9 +102,12 @@ ENV/
 # Rope project settings
 .ropeproject
 
-# Sublime Text Settings
+# Sublime Text settings
 *.sublime-*
 
+# Jetbrain editor settings
+.idea/
+
 # Docker files
 Dockerfile
-docker-compose.yml
+docker-compose.yml

axelrod/player.py

@@ -2,6 +2,7 @@
 from functools import wraps
 import random
 import copy
+import inspect
 
 from axelrod.actions import Actions, flip_action, Action
 from .game import DefaultGame
@@ -73,7 +74,7 @@ class Player(object):
     """
 
     name = "Player"
-    classifier = {} # type: Dict[str, Any]
+    classifier = {}  # type: Dict[str, Any]
     default_classifier = {
         'stochastic': False,
         'memory_depth': float('inf'),
@@ -87,10 +88,26 @@ class Player(object):
     def __new__(cls, *args, **kwargs):
         """Caches arguments for Player cloning."""
         obj = super().__new__(cls)
-        obj.init_args = args
-        obj.init_kwargs = kwargs
+        obj.init_kwargs = cls.init_params(*args, **kwargs)
         return obj
 
+    @classmethod
+    def init_params(cls, *args, **kwargs):
+        """
+        Return a dictionary containing the init parameters of a strategy (without 'self').
+        Use *args and *kwargs as value if specified
+        and complete the rest with the default values.
+        """
+        sig = inspect.signature(cls.__init__)
+        # the 'self' parameter needs to be removed or the first *args will be assigned to it
+        self_param = sig.parameters.get('self')
+        new_params = list(sig.parameters.values())
+        new_params.remove(self_param)
+        sig = sig.replace(parameters=new_params)
+        boundargs = sig.bind_partial(*args, **kwargs)
+        boundargs.apply_defaults()
+        return boundargs.arguments
+
     def __init__(self):
         """Initiates an empty history and 0 score for a player."""
         self.history = []
@@ -122,8 +139,15 @@ def set_match_attributes(self, length=-1, game=None, noise=0):
         self.receive_match_attributes()
 
     def __repr__(self):
-        """The string method for the strategy."""
-        return self.name
+        """The string method for the strategy.
+        Appends the `__init__` parameters to the strategy's name."""
+        name = self.name
+        prefix = ': '
+        gen = (value for value in self.init_kwargs.values() if value is not None)
+        for value in gen:
+            name = ''.join([name, prefix, str(value)])
+            prefix = ', '
+        return name
 
     @staticmethod
     def _add_noise(noise, s1, s2):
@@ -158,7 +182,7 @@ def clone(self):
         # be significant changes required throughout the library.
         # Override in special cases only if absolutely necessary
         cls = self.__class__
-        new_player = cls(*self.init_args, **self.init_kwargs)
+        new_player = cls(**self.init_kwargs)
         new_player.match_attributes = copy.copy(self.match_attributes)
         return new_player
 

axelrod/strategies/axelrod_first.py

@@ -259,9 +259,6 @@ def __init__(self, p: float = 0.9) -> None:
         self.p = p
         super().__init__(four_vector)
 
-    def __repr__(self) -> str:
-        return "%s: %s" % (self.name, round(self.p, 2))
-
 
 class Nydegger(Player):
     """

axelrod/strategies/cycler.py

@@ -79,7 +79,6 @@ def __init__(self, cycle: str = "CCD") -> None:
         super().__init__()
         self.cycle_str = cycle
         self.cycle = self.get_new_itertools_cycle()
-        self.name = "Cycler {}".format(cycle)
         self.classifier['memory_depth'] = len(cycle) - 1
 
     def get_new_itertools_cycle(self):
@@ -99,8 +98,8 @@ class CyclerDC(Cycler):
     classifier = copy.copy(Cycler.classifier)
     classifier['memory_depth'] = 1
 
-    def __init__(self, cycle="DC") -> None:
-        super().__init__(cycle=cycle)
+    def __init__(self) -> None:
+        super().__init__(cycle="DC")
 
 
 class CyclerCCD(Cycler):
@@ -109,8 +108,8 @@ class CyclerCCD(Cycler):
     classifier = copy.copy(Cycler.classifier)
     classifier['memory_depth'] = 2
 
-    def __init__(self, cycle="CCD") -> None:
-        super().__init__(cycle=cycle)
+    def __init__(self) -> None:
+        super().__init__(cycle="CCD")
 
 
 class CyclerDDC(Cycler):
@@ -119,8 +118,8 @@ class CyclerDDC(Cycler):
     classifier = copy.copy(Cycler.classifier)
     classifier['memory_depth'] = 2
 
-    def __init__(self, cycle="DDC") -> None:
-        super().__init__(cycle=cycle)
+    def __init__(self) -> None:
+        super().__init__(cycle="DDC")
 
 
 class CyclerCCCD(Cycler):
@@ -129,8 +128,8 @@ class CyclerCCCD(Cycler):
     classifier = copy.copy(Cycler.classifier)
     classifier['memory_depth'] = 3
 
-    def __init__(self, cycle="CCCD") -> None:
-        super().__init__(cycle=cycle)
+    def __init__(self) -> None:
+        super().__init__(cycle="CCCD")
 
 
 class CyclerCCCCCD(Cycler):
@@ -139,8 +138,8 @@ class CyclerCCCCCD(Cycler):
     classifier = copy.copy(Cycler.classifier)
     classifier['memory_depth'] = 5
 
-    def __init__(self, cycle="CCCCCD") -> None:
-        super().__init__(cycle=cycle)
+    def __init__(self) -> None:
+        super().__init__(cycle="CCCCCD")
 
 
 class CyclerCCCDCD(Cycler):
@@ -149,5 +148,5 @@ class CyclerCCCDCD(Cycler):
     classifier = copy.copy(Cycler.classifier)
     classifier['memory_depth'] = 5
 
-    def __init__(self, cycle="CCCDCD") -> None:
-        super().__init__(cycle=cycle)
+    def __init__(self) -> None:
+        super().__init__(cycle="CCCDCD")

axelrod/strategies/gobymajority.py

@@ -51,14 +51,16 @@ def __init__(self, memory_depth: int = float('inf'), soft: bool = True) -> None:
             self.memory = self.classifier['memory_depth']
         else:
             self.memory = 0
-
         self.name = (
             'Go By Majority' + (self.memory > 0) * (": %i" % self.memory))
         if self.soft:
             self.name = "Soft " + self.name
         else:
             self.name = "Hard " + self.name
 
+    def __repr__(self):
+        return self.name
+
     def strategy(self, opponent: Player) -> Action:
         """This is affected by the history of the opponent.
 

axelrod/strategies/human.py

@@ -50,7 +50,7 @@ class Human(Player):
         'manipulates_state': False
     }
 
-    def __init__(self, name='Human', c_symbol='C', d_symbol='D'):
+    def __init__(self, name='human', c_symbol='C', d_symbol='D'):
         """
         Parameters
         ----------
@@ -64,7 +64,7 @@ def __init__(self, name='Human', c_symbol='C', d_symbol='D'):
             and prompt
         """
         super().__init__()
-        self.name = name
+        self.human_name = name
         self.symbols = {
             C: c_symbol,
             D: d_symbol
@@ -81,7 +81,7 @@ def _history_toolbar(self, cli):
             self.symbols[action] for action in self.opponent_history]
         history = list(zip(my_history, opponent_history))
         if self.history:
-            content = 'History ({}, opponent): {}'.format(self.name, history)
+            content = 'History ({}, opponent): {}'.format(self.human_name, history)
         else:
             content = ''
         return [(Token.Toolbar, content)]
@@ -105,7 +105,7 @@ def _status_messages(self):
             toolbar = self._history_toolbar
             print_statement = (
                 '{}Turn {}: {} played {}, opponent played {}'.format(
-                    linesep, len(self.history), self.name,
+                    linesep, len(self.history), self.human_name,
                     self.symbols[self.history[-1]],
                     self.symbols[self.opponent_history[-1]])
             )
@@ -130,7 +130,7 @@ def _get_human_input(self) -> Action:  # pragma: no cover
         """
         action = prompt(
             'Turn {} action [C or D] for {}: '.format(
-                len(self.history) + 1, self.name),
+                len(self.history) + 1, self.human_name),
             validator=ActionValidator(),
             get_bottom_toolbar_tokens=self.status_messages['toolbar'],
             style=toolbar_style)

axelrod/strategies/meta.py

@@ -56,6 +56,10 @@ def __init__(self, team=None):
         for t in self.team:
             self.classifier['makes_use_of'].update(t.classifier['makes_use_of'])
 
+    def __repr__(self):
+        team_size = len(self.team)
+        return '{}: {} player{}'.format(self.name, team_size, 's' if team_size > 1 else '')
+
     def strategy(self, opponent):
         # Get the results of all our players.
         results = []
@@ -148,7 +152,6 @@ def reset(self):
 
 
 NiceMetaWinner = NiceTransformer()(MetaWinner)
-NiceMetaWinner.name = "Nice Meta Winner"
 
 
 class MetaWinnerEnsemble(MetaWinner):
@@ -175,7 +178,6 @@ def meta_strategy(self, results, opponent):
 
 
 NiceMetaWinnerEnsemble = NiceTransformer()(MetaWinnerEnsemble)
-NiceMetaWinnerEnsemble.name = "Nice Meta Winner Ensemble"
 
 
 class MetaHunter(MetaPlayer):

axelrod/strategies/negation.py

@@ -8,7 +8,7 @@
 class Negation(Player):
     """
     A player starts by cooperating or defecting randomly if it's their first move,
-     then simply doing the opposite of the opponents last move thereafter.
+    then simply doing the opposite of the opponents last move thereafter.
 
     Names:
 

axelrod/strategies/prober.py

@@ -283,9 +283,6 @@ def strategy(self, opponent: Player) -> Action:
         choice = random_choice(1 - self.p)
         return choice
 
-    def __repr__(self) -> str:
-        return "%s: %s" % (self.name, round(self.p, 2))
-
 
 class RemorsefulProber(NaiveProber):
     """

axelrod/strategies/rand.py

@@ -42,6 +42,3 @@ def __init__(self, p: float=0.5) -> None:
 
     def strategy(self, opponent: Player) -> Action:
         return random_choice(self.p)
-
-    def __repr__(self) -> str:
-        return "%s: %s" % (self.name, round(self.p, 2))