move ulinecache.getlines function call to linecache.getlines()

IPython/core/debugger.py

@@ -28,11 +28,12 b' http://www.python.org/2.2.3/license.html"""'
 import bdb
 import functools
 import inspect
+import linecache
 import sys
 import warnings
 
 from IPython import get_ipython
-from IPython.utils import PyColorize, ulinecache
+from IPython.utils import PyColorize
 from IPython.utils import coloransi, py3compat
 from IPython.core.excolors import exception_colors
 from IPython.testing.skipdoctest import skip_doctest
@@ -407,7 +408,7 b' class Pdb(OldPdb):'
         ret.append(u'%s(%s)%s\n' % (link,lineno,call))
 
         start = lineno - 1 - context//2
-        lines = ulinecache.getlines(filename)
+        lines = linecache.getlines(filename)
         start = min(start, len(lines) - context)
         start = max(start, 0)
         lines = lines[start : start + context]
@@ -466,7 +467,7 b' class Pdb(OldPdb):'
                 filename = self._exec_filename
 
             for lineno in range(first, last+1):
-                line = ulinecache.getline(filename, lineno)
+                line = linecache.getline(filename, lineno)
                 if not line:
                     break