symbol_sequence.py: use xrange where applicable.

diff --git a/mjo/symbol_sequence.py b/mjo/symbol_sequence.py
index b7c438fa02fda1702f6df4fd5a6f1b3a41fce7b0..2abf41b786f709afa8581c8509fd4ee6944ae0a4 100644 (file)
--- a/mjo/symbol_sequence.py
+++ b/mjo/symbol_sequence.py
@@ -38,7 +38,7 @@ class SymbolSequence:
     degree::
 
         sage: a = SymbolSequence('a')
-        sage: p = sum( a[i]*x^i for i in range(5) )
+        sage: p = sum( a[i]*x^i for i in xrange(5) )
         sage: p
         a_4*x^4 + a_3*x^3 + a_2*x^2 + a_1*x + a_0
 
@@ -57,7 +57,7 @@ class SymbolSequence:
         a_0_1_2
         sage: latex(a[0,1,2])
         a_{0}_{1}_{2}
-        sage: [ a[i,j] for i in range(0,2) for j in range(0,2) ]
+        sage: [ a[i,j] for i in xrange(2) for j in xrange(2) ]
         [a_0_0, a_0_1, a_1_0, a_1_1]
 
     You can pass slices instead of integers to obtain a list of
@@ -283,7 +283,7 @@ class SymbolSequence:
         # If the user asks for a slice, we'll be returning a list
         # of symbols.
         return [ self._subscript_integer_(idx)
-                 for idx in range(start, s.stop, step) ]
+                 for idx in xrange(start, s.stop, step) ]