diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/dataimport/__init__.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/dataimport/__init__.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,35 @@
+# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+"""Package containing various utilities to import data into cubicweb."""
+
+
+def callfunc_every(func, number, iterable):
+    """yield items of `iterable` one by one and call function `func`
+    every `number` iterations. Always call function `func` at the end.
+    """
+    for idx, item in enumerate(iterable):
+        yield item
+        if not idx % number:
+            func()
+    func()
+
+# import for backward compat
+from cubicweb.dataimport.stores import *
+from cubicweb.dataimport.pgstore import *
+from cubicweb.dataimport.csv import *
+from cubicweb.dataimport.deprecated import *