fix more suggested range(0,?)

Author: fchapoton

src/sage/schemes/toric/ideal.py

@@ -354,8 +354,8 @@ def _naive_ideal(self, ring):
         x = ring.gens()
         binomials = []
         for row in self.ker().matrix().rows():
-            xpos = prod(x[i]**max(row[i], 0) for i in range(0, len(x)))
-            xneg = prod(x[i]**max(-row[i], 0) for i in range(0, len(x)))
+            xpos = prod(x[i]**max(row[i], 0) for i in range(len(x)))
+            xneg = prod(x[i]**max(-row[i], 0) for i in range(len(x)))
             binomials.append(xpos - xneg)
         return ring.ideal(binomials)
 
@@ -445,6 +445,6 @@ def _ideal_HostenSturmfels(self):
         J = self._naive_ideal(ring)
         if J.is_zero():
             return J
-        for i in range(0, self.nvariables()):
+        for i in range(self.nvariables()):
             J = self._ideal_quotient_by_variable(ring, J, i)
         return J