Pass parent to child for configuration to propagate

IPython/core/interactiveshell.py

@@ -578,7 +578,7 b' class InteractiveShell(SingletonConfigurable):'
     @observe('colors')
     def init_syntax_highlighting(self, changes=None):
         # Python source parser/formatter for syntax highlighting
-        pyformat = PyColorize.Parser(style=self.colors).format
+        pyformat = PyColorize.Parser(style=self.colors, parent=self).format
         self.pycolorize = lambda src: pyformat(src,'str')
 
     def refresh_style(self):
@@ -1569,7 +1569,7 b' class InteractiveShell(SingletonConfigurable):'
 
     def init_traceback_handlers(self, custom_exceptions):
         # Syntax error handler.
-        self.SyntaxTB = ultratb.SyntaxTB(color_scheme='NoColor')
+        self.SyntaxTB = ultratb.SyntaxTB(color_scheme='NoColor', parent=self)
 
         # The interactive one is initialized with an offset, meaning we always
         # want to remove the topmost item in the traceback, which is our own
@@ -1578,7 +1578,7 b' class InteractiveShell(SingletonConfigurable):'
                                                      color_scheme='NoColor',
                                                      tb_offset = 1,
                                    check_cache=check_linecache_ipython,
-                                   debugger_cls=self.debugger_cls)
+                                   debugger_cls=self.debugger_cls, parent=self)
 
         # The instance will store a pointer to the system-wide exception hook,
         # so that runtime code (such as magics) can access it.  This is because

IPython/core/ultratb.py

@@ -387,13 +387,11 b' def _fixed_getinnerframes(etb, context=1, tb_offset=0):'
 # (SyntaxErrors have to be treated specially because they have no traceback)
 
 
-def _format_traceback_lines(lnum, index, lines, Colors, lvals=None, scheme=None):
+def _format_traceback_lines(lnum, index, lines, Colors, lvals=None,  _line_format=(lambda x,_:x,None)):
     numbers_width = INDENT_SIZE - 1
     res = []
     i = lnum - index
 
-    _line_format = PyColorize.Parser(style=scheme).format2
-
     for line in lines:
         line = py3compat.cast_unicode(line)
 
@@ -586,9 +584,9 b' class ListTB(TBTools):'
     Because they are meant to be called without a full traceback (only a
     list), instances of this class can't call the interactive pdb debugger."""
 
-    def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None):
+    def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None, config=None):
         TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
-                         ostream=ostream, parent=parent)
+                         ostream=ostream, parent=parent,config=config)
 
     def __call__(self, etype, value, elist):
         self.ostream.flush()
@@ -801,7 +799,8 b' class VerboseTB(TBTools):'
 
     def __init__(self, color_scheme='Linux', call_pdb=False, ostream=None,
                  tb_offset=0, long_header=False, include_vars=True,
-                 check_cache=None, debugger_cls = None):
+                 check_cache=None, debugger_cls = None,
+                 parent=None, config=None):
         """Specify traceback offset, headers and color scheme.
 
         Define how many frames to drop from the tracebacks. Calling it with
@@ -809,7 +808,7 b' class VerboseTB(TBTools):'
         their own code at the top of the traceback (VerboseTB will first
         remove that frame before printing the traceback info)."""
         TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
-                         ostream=ostream)
+                         ostream=ostream, parent=parent, config=config)
         self.tb_offset = tb_offset
         self.long_header = long_header
         self.include_vars = include_vars
@@ -1010,9 +1009,10 b' class VerboseTB(TBTools):'
         if index is None:
             return level
         else:
+            _line_format = PyColorize.Parser(style=col_scheme, parent=self).format2
             return '%s%s' % (level, ''.join(
                 _format_traceback_lines(lnum, index, lines, Colors, lvals,
-                                        col_scheme)))
+                                         _line_format)))
 
     def prepare_chained_exception_message(self, cause):
         direct_cause = "\nThe above exception was the direct cause of the following exception:\n"
@@ -1277,7 +1277,8 b' class FormattedTB(VerboseTB, ListTB):'
     def __init__(self, mode='Plain', color_scheme='Linux', call_pdb=False,
                  ostream=None,
                  tb_offset=0, long_header=False, include_vars=False,
-                 check_cache=None, debugger_cls=None):
+                 check_cache=None, debugger_cls=None,
+                 parent=None, config=None):
 
         # NEVER change the order of this list. Put new modes at the end:
         self.valid_modes = ['Plain', 'Context', 'Verbose']
@@ -1286,7 +1287,8 b' class FormattedTB(VerboseTB, ListTB):'
         VerboseTB.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
                            ostream=ostream, tb_offset=tb_offset,
                            long_header=long_header, include_vars=include_vars,
-                           check_cache=check_cache, debugger_cls=debugger_cls)
+                           check_cache=check_cache, debugger_cls=debugger_cls,
+                           parent=parent, config=config)
 
         # Different types of tracebacks are joined with different separators to
         # form a single string.  They are taken from this dict
@@ -1415,8 +1417,8 b' class ColorTB(FormattedTB):'
 class SyntaxTB(ListTB):
     """Extension which holds some state: the last exception value"""
 
-    def __init__(self, color_scheme='NoColor'):
-        ListTB.__init__(self, color_scheme)
+    def __init__(self, color_scheme='NoColor', parent=None, config=None):
+        ListTB.__init__(self, color_scheme, parent=parent, config=config)
         self.last_syntax_error = None
 
     def __call__(self, etype, value, elist):

IPython/utils/PyColorize.py

@@ -44,12 +44,7 b' import sys'
 import token
 import tokenize
 
-try:
-    generate_tokens = tokenize.generate_tokens
-except AttributeError:
-    # Python 3. Note that we use the undocumented _tokenize because it expects
-    # strings, not bytes. See also Python issue #9969.
-    generate_tokens = tokenize._tokenize
+generate_tokens = tokenize.generate_tokens
 
 from IPython.utils.coloransi import TermColors, InputTermColors ,ColorScheme, ColorSchemeTable
 from IPython.utils.py3compat import PY3