Merge pull request #1177 from Axelrod-Python/fix-typing-for-mypy-2.1

Fix type hints for mypy 2.1

axelrod/fingerprint.py

@@ -268,7 +268,7 @@ def construct_tournament_elements(self, step: float,
 
     def fingerprint(
         self, turns: int = 50, repetitions: int = 10, step: float = 0.01,
-        processes: int=None, filename: str = None,
+        processes: int = None, filename: str = None,
         progress_bar: bool = True
 ) -> dict:
         """Build and play the spatial tournament.
@@ -305,7 +305,7 @@ def fingerprint(
 
         temp_file_descriptor = None
         if filename is None:
-            temp_file_descriptor, filename = mkstemp()
+            temp_file_descriptor, filename = mkstemp()  # type: ignore
 
         edges, tourn_players = self.construct_tournament_elements(
             step, progress_bar=progress_bar)
@@ -323,6 +323,7 @@ def fingerprint(
             filename, progress_bar=progress_bar)
 
         if temp_file_descriptor is not None:
+            assert filename is not None
             os.close(temp_file_descriptor)
             os.remove(filename)
 
@@ -443,7 +444,7 @@ def fingerprint(self, turns: int = 50, repetitions: int = 1000,
 
         temp_file_descriptor = None
         if filename is None:
-            temp_file_descriptor, filename = mkstemp()
+            temp_file_descriptor, filename = mkstemp()  # type: ignore
 
         edges = [(0, k + 1) for k in range(len(self.opponents))]
         tournament = axl.Tournament(players=players,
@@ -455,6 +456,7 @@ def fingerprint(self, turns: int = 50, repetitions: int = 1000,
         self.data = self.analyse_cooperation_ratio(filename)
 
         if temp_file_descriptor is not None:
+            assert filename is not None
             os.close(temp_file_descriptor)
             os.remove(filename)
 

axelrod/moran.py

@@ -12,7 +12,7 @@
 from .match import Match
 from .random_ import randrange
 
-from typing import List, Tuple, Set
+from typing import List, Tuple, Set, Optional
 
 
 def fitness_proportionate_selection(scores: List) -> int:
@@ -102,7 +102,7 @@ def __init__(self, players: List[Player], turns: int = DEFAULT_TURNS,
         self.populations = []  # type: List
         self.set_players()
         self.score_history = []  # type: List
-        self.winning_strategy_name = None  # type: str
+        self.winning_strategy_name = None  # type: Optional[str]
         self.mutation_rate = mutation_rate
         assert (mutation_rate >= 0) and (mutation_rate <= 1)
         assert (noise >= 0) and (noise <= 1)
@@ -184,7 +184,7 @@ def death(self, index: int = None) -> int:
         index:
             The index of the player to be removed
         """
-        if self.mode == "db":
+        if index is None:
             # Select a player to be replaced globally
             i = randrange(0, len(self.players))
             # Record internally for use in _matchup_indices
@@ -207,7 +207,7 @@ def birth(self, index: int = None) -> int:
         """
         # Compute necessary fitnesses.
         scores = self.score_all()
-        if self.mode == "db":
+        if index is not None:
             # Death has already occurred, so remove the dead player from the
             # possible choices
             scores.pop(index)

axelrod/strategies/apavlov.py

@@ -1,6 +1,8 @@
 from axelrod.action import Action
 from axelrod.player import Player
 
+from typing import Optional
+
 C, D = Action.C, Action.D
 
 
@@ -29,7 +31,7 @@ class APavlov2006(Player):
 
     def __init__(self) -> None:
         super().__init__()
-        self.opponent_class = None  # type: str
+        self.opponent_class = None  # type: Optional[str]
 
     def strategy(self, opponent: Player) -> Action:
         # TFT for six rounds
@@ -93,7 +95,7 @@ class APavlov2011(Player):
 
     def __init__(self) -> None:
         super().__init__()
-        self.opponent_class = None # type: str
+        self.opponent_class = None  # type: Optional[str]
 
     def strategy(self, opponent: Player) -> Action:
         # TFT for six rounds

axelrod/strategies/darwin.py

@@ -8,6 +8,8 @@
 from axelrod.action import Action
 from axelrod.player import Player
 
+from typing import Optional
+
 C, D = Action.C, Action.D
 
 
@@ -48,7 +50,7 @@ class Darwin(Player):
     valid_callers = ["play"]    # What functions may invoke our strategy.
 
     def __init__(self) -> None:
-        self.outcomes = None  # type: dict
+        self.outcomes = None  # type: Optional[dict]
         self.response = Darwin.genome[0]
         super().__init__()
 
@@ -64,6 +66,7 @@ def strategy(self, opponent: Player) -> Action:
         trial = len(self.history)
 
         if trial > 0:
+            assert self.outcomes is not None
             outcome = self.outcomes[(self.history[-1], opponent.history[-1])]
             self.mutate(outcome, trial)
             # Update genome with selected response

axelrod/strategies/hunter.py

@@ -2,7 +2,7 @@
 from axelrod.player import Player
 from axelrod._strategy_utils import detect_cycle
 
-from typing import List, Tuple
+from typing import List, Tuple, Optional
 
 C, D = Action.C, Action.D
 
@@ -120,7 +120,7 @@ class CycleHunter(Player):
 
     def __init__(self) -> None:
         super().__init__()
-        self.cycle = None # type: Tuple[Action]
+        self.cycle = None  # type: Optional[Tuple[Action]]
 
     def strategy(self, opponent: Player) -> Action:
         if self.cycle:

axelrod/strategies/memoryone.py

@@ -193,6 +193,7 @@ def receive_match_attributes(self):
         self.set_four_vector(four_vector)
 
     def __repr__(self) -> str:
+        assert self.p is not None
         return "%s: %s" % (self.name, round(self.p, 2))
 
 

axelrod/tests/unit/test_moran.py

@@ -77,13 +77,13 @@ def test_death_in_db(self):
         players = axelrod.Cooperator(), axelrod.Defector(), axelrod.TitForTat()
         mp = MoranProcess(players, mutation_rate=0.5, mode="db")
         axelrod.seed(1)
-        self.assertEqual(mp.death(0), 0)
+        self.assertEqual(mp.death(), 0)
         self.assertEqual(mp.dead, 0)
         axelrod.seed(5)
-        self.assertEqual(mp.death(0), 1)
+        self.assertEqual(mp.death(), 1)
         self.assertEqual(mp.dead, 1)
         axelrod.seed(2)
-        self.assertEqual(mp.death(0), 2)
+        self.assertEqual(mp.death(), 2)
         self.assertEqual(mp.dead, 2)
 
     def test_death_in_bd(self):
@@ -102,14 +102,14 @@ def test_birth_in_db(self):
         players = axelrod.Cooperator(), axelrod.Defector(), axelrod.TitForTat()
         mp = MoranProcess(players, mode="db")
         axelrod.seed(1)
-        self.assertEqual(mp.death(0), 0)
+        self.assertEqual(mp.death(), 0)
         self.assertEqual(mp.birth(0), 2)
 
     def test_birth_in_bd(self):
         players = axelrod.Cooperator(), axelrod.Defector(), axelrod.TitForTat()
         mp = MoranProcess(players, mode="bd")
         axelrod.seed(1)
-        self.assertEqual(mp.birth(0), 0)
+        self.assertEqual(mp.birth(), 0)
 
     def test_fixation_check(self):
         players = axelrod.Cooperator(), axelrod.Cooperator()

axelrod/tournament.py

@@ -21,7 +21,7 @@
 
 C, D = Action.C, Action.D
 
-from typing import List, Tuple
+from typing import List, Tuple, Optional
 
 
 class Tournament(object):
@@ -83,8 +83,8 @@ def __init__(self, players: List[Player],
         self._logger = logging.getLogger(__name__)
 
         self.use_progress_bar = True
-        self.filename = None  # type: str
-        self._temp_file_descriptor = None  # type: int
+        self.filename = None  # type: Optional[str]
+        self._temp_file_descriptor = None  # type: Optional[int]
 
     def setup_output(self, filename=None):
         """assign/create `filename` to `self`. If file should be deleted once
@@ -142,6 +142,7 @@ def play(self, build_results: bool = True, filename: str = None,
                                    processes=processes,
                                    progress_bar=progress_bar)
         if self._temp_file_descriptor is not None:
+            assert self.filename is not None
             os.close(self._temp_file_descriptor)
             os.remove(self.filename)