diff --git a/bin/addons/base/module/module.py b/bin/addons/base/module/module.py
index f552a24de64..3dcd5b550c9 100644
--- a/bin/addons/base/module/module.py
+++ b/bin/addons/base/module/module.py
@@ -53,8 +53,7 @@ class module_category(osv.osv):
         result = dict(cr.fetchall())
         for id in ids:
             cr.execute('select id from ir_module_category where parent_id=%s', (id,))
-            childs = [c for c, in cr.fetchall()]
-            result[id] = reduce(lambda x,y:x+y, [result.get(c, 0) for c in childs], result.get(id, 0))
+            result[id] = reduce(lambda x,y:x+y, [result.get(c, 0) for (c,) in cr.fetchall()], result.get(id, 0))
         return result
 
     _columns = {
diff --git a/bin/osv/orm.py b/bin/osv/orm.py
index 2b7fe0ce989..bac069847bc 100644
--- a/bin/osv/orm.py
+++ b/bin/osv/orm.py
@@ -1274,7 +1274,7 @@ class orm_template(object):
             context = {}
         result = False
         fields = {}
-        childs = True
+        children = True
 
         def encode(s):
             if isinstance(s, unicode):
@@ -1328,7 +1328,7 @@ class orm_template(object):
                 if column:
                     relation = self.pool.get(column._obj)
 
-                    childs = False
+                    children = False
                     views = {}
                     for f in node:
                         if f.tag in ('form', 'tree', 'graph'):
@@ -1390,7 +1390,7 @@ class orm_template(object):
                     node.set('sum', trans)
 
         for f in node:
-            if childs or (node.tag == 'field' and f.tag in ('filter','separator')):
+            if children or (node.tag == 'field' and f.tag in ('filter','separator')):
                 fields.update(self.__view_look_dom(cr, user, f, view_id, context))
 
         return fields
@@ -1437,7 +1437,7 @@ class orm_template(object):
             fields = self.fields_get(cr, user, fields_def.keys(), context)
         for field in fields_def:
             if field == 'id':
-                # sometime, the view may containt the (invisible) field 'id' needed for a domain (when 2 objects have cross references)
+                # sometime, the view may contain the (invisible) field 'id' needed for a domain (when 2 objects have cross references)
                 fields['id'] = {'readonly': True, 'type': 'integer', 'string': 'ID'}
             elif field in fields:
                 fields[field].update(fields_def[field])
@@ -2355,8 +2355,7 @@ class orm(orm_template):
                 where += ' order by '+self._parent_order
             cr.execute('SELECT id FROM '+self._table+' WHERE '+where)
             pos2 = pos + 1
-            childs = cr.fetchall()
-            for id in childs:
+            for id in cr.fetchall():
                 pos2 = browse_rec(id[0], pos2)
             cr.execute('update '+self._table+' set parent_left=%s, parent_right=%s where id=%s', (pos, pos2, root))
             return pos2 + 1
@@ -4154,9 +4153,9 @@ class orm(orm_template):
                 old_record, new_record = self.read(cr, uid, [old_id, new_id], [field_name], context=context)
                 # here we rely on the order of the ids to match the translations
                 # as foreseen in copy_data()
-                old_childs = sorted(old_record[field_name])
-                new_childs = sorted(new_record[field_name])
-                for (old_child, new_child) in zip(old_childs, new_childs):
+                old_children = sorted(old_record[field_name])
+                new_children = sorted(new_record[field_name])
+                for (old_child, new_child) in zip(old_children, new_children):
                     # recursive copy of translations here
                     target_obj.copy_translations(cr, uid, old_child, new_child, context=context)
             # and for translatable fields we keep them for copy
diff --git a/bin/report/print_xml.py b/bin/report/print_xml.py
index f349e10b1ba..3319ee0b558 100644
--- a/bin/report/print_xml.py
+++ b/bin/report/print_xml.py
@@ -254,7 +254,7 @@ class document(object):
                             for el_cld in node:
                                 self.parse_node(el_cld, el, v)
             else:
-                # if there is no "type" attribute in the node, copy it to the xml data and parse its childs
+                # if there is no "type" attribute in the node, copy it to the xml data and parse its children
                 if not node.tag == etree.Comment:
                     if node.tag == parent.tag:
                         el = parent
diff --git a/bin/report/render/rml2pdf/trml2pdf.py b/bin/report/render/rml2pdf/trml2pdf.py
index 83f1ce498fa..e9969fa4e52 100644
--- a/bin/report/render/rml2pdf/trml2pdf.py
+++ b/bin/report/render/rml2pdf/trml2pdf.py
@@ -552,8 +552,8 @@ class _rml_flowable(object):
         return rc1
 
     def _table(self, node):
-        childs = utils._child_get(node,self,'tr')
-        if not childs:
+        children = utils._child_get(node,self,'tr')
+        if not children:
             return None
         length = 0
         colwidths = None
@@ -561,7 +561,7 @@ class _rml_flowable(object):
         data = []
         styles = []
         posy = 0
-        for tr in childs:
+        for tr in children:
             paraStyle = None
             if tr.get('style'):
                 st = copy.deepcopy(self.styles.table_styles[tr.get('style')])