diff --git a/yapps/runtime.py b/yapps/runtime.py
index 29f91e7..5d40581 100644
--- a/yapps/runtime.py
+++ b/yapps/runtime.py
@@ -168,14 +168,17 @@ def get_pos(self):
 #			output += '%s\n' % (repr(t),)
 #		return output
 
-    def print_line_with_pointer(self, pos, length=0, out=sys.stderr):
+    def print_line_with_pointer(self, pos, length=0, out=None):
         """Print the line of 'text' that includes position 'p',
         along with a second line with a single caret (^) at position p"""
 
+        if out is None:
+            out = sys.stderr
+
         file,line,p = pos
         if file != self.filename:
             if self.stack: return self.stack.print_line_with_pointer(pos,length=length,out=out)
-            print >>out, "(%s: not in input buffer)" % file
+            print("(%s: not in input buffer)" % file, file=out)
             return
 
         text = self.input
@@ -198,7 +201,7 @@ def print_line_with_pointer(self, pos, length=0, out=sys.stderr):
                     break
                 spos = cr+1
         else:
-            print >>out, "(%s:%d not in input buffer)" % (file,origline)
+            print("(%s:%d not in input buffer)" % (file,origline), file=out)
             return
 
         # Now try printing part of the line
@@ -227,8 +230,8 @@ def print_line_with_pointer(self, pos, length=0, out=sys.stderr):
             p = p - 7
 
         # Now print the string, along with an indicator
-        print >>out, '> ',text
-        print >>out, '> ',' '*p + '^'
+        print('> ',text, file=out)
+        print('> ',' '*p + '^', file=out)
 
     def grab_input(self):
         """Get more input if possible."""