added unicode_literals import at start of each file
diff --git a/erpnext/sandbox/testdata/leaves.py b/erpnext/sandbox/testdata/leaves.py
index d8ed122..db8b431 100644
--- a/erpnext/sandbox/testdata/leaves.py
+++ b/erpnext/sandbox/testdata/leaves.py
@@ -14,6 +14,7 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
+from __future__ import unicode_literals
from webnotes.model.doc import Document
emp = Document(