Merge pull request #1223 from danilobellini/human

Make Human work w/ both prompt_toolkit v1 and v2

Author: meatballs

axelrod/strategies/human.py

@@ -3,13 +3,27 @@
 from axelrod.action import Action
 from axelrod.player import Player
 from prompt_toolkit import prompt
-from prompt_toolkit.styles import style_from_dict
-from prompt_toolkit.token import Token
 from prompt_toolkit.validation import ValidationError, Validator
 
+try:  # pragma: no cover
+    from prompt_toolkit.styles import style_from_dict
+    from prompt_toolkit.token import Token
+
+    token_toolbar = Token.Toolbar
+    bottom_toolbar_name = "get_bottom_toolbar_tokens"
+    PROMPT2 = False
+
+except ImportError:  # prompt_toolkit v2
+    from prompt_toolkit.styles import Style
+
+    style_from_dict = Style.from_dict
+    token_toolbar = "pygments.toolbar"
+    bottom_toolbar_name = "bottom_toolbar"
+    PROMPT2 = True
+
 C, D = Action.C, Action.D
 
-toolbar_style = style_from_dict({Token.Toolbar: "#ffffff bg:#333333"})
+toolbar_style = style_from_dict({token_toolbar: "#ffffff bg:#333333"})
 
 
 class ActionValidator(Validator):
@@ -65,7 +79,7 @@ def __init__(self, name="human", c_symbol="C", d_symbol="D"):
         self.symbols = {C: c_symbol, D: d_symbol}
         self.opponent_history = []
 
-    def _history_toolbar(self, cli):
+    def _history_toolbar(self):
         """
         A prompt-toolkit function to define the bottom toolbar.
         Described at http://python-prompt-toolkit.readthedocs.io/en/latest/pages/building_prompts.html#adding-a-bottom-toolbar
@@ -77,7 +91,7 @@ def _history_toolbar(self, cli):
             content = "History ({}, opponent): {}".format(self.human_name, history)
         else:
             content = ""
-        return [(Token.Toolbar, content)]
+        return content
 
     def _status_messages(self):
         """
@@ -95,7 +109,11 @@ def _status_messages(self):
             mapping print or toolbar to the relevant string
         """
         if self.history:
-            toolbar = self._history_toolbar
+            toolbar = (
+                self._history_toolbar
+                if PROMPT2
+                else lambda cli: [(token_toolbar, self._history_toolbar())]
+            )
             print_statement = "{}Turn {}: {} played {}, opponent played {}".format(
                 linesep,
                 len(self.history),
@@ -124,8 +142,8 @@ def _get_human_input(self) -> Action:  # pragma: no cover
                 len(self.history) + 1, self.human_name
             ),
             validator=ActionValidator(),
-            get_bottom_toolbar_tokens=self.status_messages["toolbar"],
             style=toolbar_style,
+            **{bottom_toolbar_name: self.status_messages["toolbar"]},
         )
 
         return Action.from_char(action.upper())

axelrod/tests/strategies/test_human.py

@@ -52,13 +52,13 @@ def test_init(self):
     def test_history_toolbar(self):
         human = Human()
         expected_content = ""
-        actual_content = human._history_toolbar(None)[0][1]
+        actual_content = human._history_toolbar()
         self.assertEqual(actual_content, expected_content)
 
         human.history = [C]
         human.opponent_history = [C]
         expected_content = "History (human, opponent): [('C', 'C')]"
-        actual_content = human._history_toolbar(None)[0][1]
+        actual_content = human._history_toolbar()
         self.assertIn(actual_content, expected_content)
 
     def test_status_messages(self):

requirements.txt

@@ -4,7 +4,7 @@ hypothesis==3.2
 matplotlib>=2.0.0,<3.0.0
 numpy>=1.9.2
 pandas>=0.18.1
-prompt-toolkit>=1.0.7,<2.0.0
+prompt-toolkit>=1.0.7
 scipy>=0.19.0
 toolz>=0.8.0
 tqdm>=3.4.0