Reinstate next() method for Py2 compatibility

src/sage/rings/polynomial/weil/weil_polynomials.pyx

@@ -367,6 +367,22 @@ class WeilPolynomials_iter():
                 raise StopIteration
         return self.pol(self.ans.pop())
 
+    def next(self): # For Python2 backward compatibility
+        r"""
+        Step the iterator forward.
+
+        Included for Python2 backward compatibility.
+
+        EXAMPLES::
+
+            sage: from sage.rings.polynomial.weil.weil_polynomials import WeilPoynomials
+            sage: w = WeilPolynomials(10,1,sign=1,lead=[3,1,1])
+            sage: it = iter(w)
+            sage: next(it)
+            3*x^10 + x^9 + x^8 + 7*x^7 + 5*x^6 + 2*x^5 + 5*x^4 + 7*x^3 + x^2 + x 3
+        """
+        return self.__next__()
+
     def node_count(self):
         r"""
         Return the number of terminal nodes found in the tree, excluding