diff --git a/django/contrib/localflavor/br/forms.py b/django/contrib/localflavor/br/forms.py
index 4d0d6815ba..0f957be37f 100644
--- a/django/contrib/localflavor/br/forms.py
+++ b/django/contrib/localflavor/br/forms.py
@@ -154,10 +154,10 @@ class BRCNPJField(Field):
             raise ValidationError(self.error_messages['max_digits'])
         orig_dv = value[-2:]
 
-        new_1dv = sum([i * int(value[idx]) for idx, i in enumerate(range(5, 1, -1) + range(9, 1, -1))])
+        new_1dv = sum([i * int(value[idx]) for idx, i in enumerate(list(range(5, 1, -1)) + list(range(9, 1, -1)))])
         new_1dv = DV_maker(new_1dv % 11)
         value = value[:-2] + str(new_1dv) + value[-1]
-        new_2dv = sum([i * int(value[idx]) for idx, i in enumerate(range(6, 1, -1) + range(9, 1, -1))])
+        new_2dv = sum([i * int(value[idx]) for idx, i in enumerate(list(range(6, 1, -1)) + list(range(9, 1, -1)))])
         new_2dv = DV_maker(new_2dv % 11)
         value = value[:-1] + str(new_2dv)
         if value[-2:] != orig_dv:
diff --git a/django/contrib/localflavor/si/forms.py b/django/contrib/localflavor/si/forms.py
index aa4b9dac5a..bab35935fd 100644
--- a/django/contrib/localflavor/si/forms.py
+++ b/django/contrib/localflavor/si/forms.py
@@ -41,7 +41,7 @@ class SIEMSOField(CharField):
         # Validate EMSO
         s = 0
         int_values = [int(i) for i in value]
-        for a, b in zip(int_values, range(7, 1, -1) * 2):
+        for a, b in zip(int_values, list(range(7, 1, -1)) * 2):
             s += a * b
         chk = s % 11
         if chk == 0: