Use new prompt machinery to generate Out prompts

IPython/core/displayhook.py

@@ -113,7 +113,7 b' class DisplayHook(Configurable):'
         """
         # Use write, not print which adds an extra space.
         sys.stdout.write(self.shell.separate_out)
-        outprompt = self.shell.prompt_manager.render('out')
+        outprompt = 'Out[{}]: '.format(self.shell.execution_count)
         if self.do_full_cache:
             sys.stdout.write(outprompt)
 

IPython/terminal/prompts.py

@@ -1,4 +1,7 b''
 from pygments.token import Token
+import sys
+
+from IPython.core.displayhook import DisplayHook
 
 class Prompts(object):
     def __init__(self, shell):
@@ -34,3 +37,14 b' class Prompts(object):'
             (Token.OutPromptNum, str(self.shell.execution_count)),
             (Token.OutPrompt, ']: '),
         ]
+
+class RichPromptDisplayHook(DisplayHook):
+    """Subclass of base display hook using coloured prompt"""
+    def write_output_prompt(self):
+        sys.stdout.write(self.shell.separate_out)
+        if self.do_full_cache:
+            tokens = self.shell.prompts.out_prompt_tokens()
+            if self.shell.pt_cli:
+                self.shell.pt_cli.print_tokens(tokens)
+            else:
+                print(*(s for t, s in tokens), sep='')

IPython/terminal/ptshell.py

@@ -29,7 +29,7 b' from pygments.token import Token'
 from .debugger import TerminalPdb, Pdb
 from .pt_inputhooks import get_inputhook_func
 from .interactiveshell import get_default_editor, TerminalMagics
-from .prompts import Prompts
+from .prompts import Prompts, RichPromptDisplayHook
 from .ptutils import IPythonPTCompleter, IPythonPTLexer
 
 _use_simple_prompt = 'IPY_TEST_SIMPLE_PROMPT' in os.environ or not sys.stdin.isatty()
@@ -104,7 +104,10 b' class TerminalInteractiveShell(InteractiveShell):'
 
     def _prompts_default(self):
         return Prompts(self)
-    
+
+    def _displayhook_class_default(self):
+        return RichPromptDisplayHook
+
     term_title = Bool(True,
         help="Automatically set the terminal title"
     ).tag(config=True)
@@ -228,6 +231,8 b' class TerminalInteractiveShell(InteractiveShell):'
         style_overrides = {
             Token.Prompt: '#009900',
             Token.PromptNum: '#00ff00 bold',
+            Token.OutPrompt: '#990000',
+            Token.OutPromptNum: '#ff0000 bold',
         }
         if name == 'default':
             style_cls = get_style_by_name('default')