py3: some care for .iteritems

src/sage/categories/quantum_group_representations.py

@@ -293,8 +293,8 @@ def e(self, i):
                 """
                 F = self.parent()
                 mc = self.monomial_coefficients(copy=False)
-                return F.linear_combination( (F.e_on_basis(i, m), c)
-                                             for m,c in mc.iteritems() )
+                return F.linear_combination((F.e_on_basis(i, m), c)
+                                            for m, c in mc.items())
 
             def f(self, i):
                 r"""
@@ -325,8 +325,8 @@ def f(self, i):
                 """
                 F = self.parent()
                 mc = self.monomial_coefficients(copy=False)
-                return F.linear_combination( (F.f_on_basis(i, m), c)
-                                             for m,c in mc.iteritems() )
+                return F.linear_combination((F.f_on_basis(i, m), c)
+                                            for m, c in mc.items())
 
             def K(self, i, power=1):
                 r"""
@@ -356,8 +356,8 @@ def K(self, i, power=1):
                 """
                 F = self.parent()
                 mc = self.monomial_coefficients(copy=False)
-                return F.linear_combination( (F.K_on_basis(i, m, power), c)
-                                             for m,c in mc.iteritems() )
+                return F.linear_combination((F.K_on_basis(i, m, power), c)
+                                            for m, c in mc.items())
 
     class TensorProducts(TensorProductsCategory):
         """

src/sage/modules/free_module_element.pyx

@@ -4561,12 +4561,12 @@ cdef class FreeModuleElement_generic_sparse(FreeModuleElement):
                 e = entries
                 entries = {}
                 try:
-                    for k, x in e.iteritems():
+                    for k, x in e.items():
                         x = coefficient_ring(x)
                         if x:
                             entries[k] = x
                 except TypeError:
-                    raise TypeError("Unable to coerce value (=%s) of entries dict (=%s) to %s"%(x, entries, coefficient_ring))
+                    raise TypeError("Unable to coerce value (=%s) of entries dict (=%s) to %s" % (x, entries, coefficient_ring))
             elif copy:
                 entries = dict(entries)  # make a copy/convert to dict
         self._entries = entries

src/sage/symbolic/relation.py

@@ -1088,7 +1088,7 @@ def solve(f, *args, **kwds):
                     l = []
                     for d in ret:
                         r = {}
-                        for (v,ex) in d.iteritems():
+                        for (v, ex) in d.items():
                             r[v._sage_()] = ex._sage_()
                         l.append(r)
                     return l
@@ -1099,7 +1099,7 @@ def solve(f, *args, **kwds):
                 l = []
                 for sol in ret:
                     r = {}
-                    for (v,ex) in sol.iteritems():
+                    for (v, ex) in sol.items():
                         r[v._sage_()] = ex._sage_()
                     l.append(r)
                 return l
@@ -1116,7 +1116,7 @@ def solve(f, *args, **kwds):
             s = m.to_poly_solve(variables)
         except TypeError as mess: # if that gives an error, raise an error.
             if "Error executing code in Maxima" in str(mess):
-                raise ValueError("Sage is unable to determine whether the system %s can be solved for %s"%(f,args))
+                raise ValueError("Sage is unable to determine whether the system %s can be solved for %s" % (f, args))
             else:
                 raise