added unicode_literals import at start of each file
diff --git a/erpnext/sandbox/__init__.py b/erpnext/sandbox/__init__.py
index e69de29..baffc48 100644
--- a/erpnext/sandbox/__init__.py
+++ b/erpnext/sandbox/__init__.py
@@ -0,0 +1 @@
+from __future__ import unicode_literals
diff --git a/erpnext/sandbox/test_leave.py b/erpnext/sandbox/test_leave.py
index 407b0f1..52715ec 100644
--- a/erpnext/sandbox/test_leave.py
+++ b/erpnext/sandbox/test_leave.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
import unittest
import webnotes
diff --git a/erpnext/sandbox/test_stock_entry.py b/erpnext/sandbox/test_stock_entry.py
index 7721a3e..e11d567 100644
--- a/erpnext/sandbox/test_stock_entry.py
+++ b/erpnext/sandbox/test_stock_entry.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
import unittest
import webnotes
diff --git a/erpnext/sandbox/test_stock_reco.py b/erpnext/sandbox/test_stock_reco.py
index 1d78277..d02d6f5 100644
--- a/erpnext/sandbox/test_stock_reco.py
+++ b/erpnext/sandbox/test_stock_reco.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
import unittest
import webnotes
diff --git a/erpnext/sandbox/testdata/__init__.py b/erpnext/sandbox/testdata/__init__.py
index e69de29..baffc48 100644
--- a/erpnext/sandbox/testdata/__init__.py
+++ b/erpnext/sandbox/testdata/__init__.py
@@ -0,0 +1 @@
+from __future__ import unicode_literals
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(
diff --git a/erpnext/sandbox/testdata/masters.py b/erpnext/sandbox/testdata/masters.py
index 61fa2cb..c59253b 100644
--- a/erpnext/sandbox/testdata/masters.py
+++ b/erpnext/sandbox/testdata/masters.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
"""
All master data in one place, can be created by 1 function call
diff --git a/erpnext/sandbox/testdata/sle_data.py b/erpnext/sandbox/testdata/sle_data.py
index 3469c10..5cd6dc2 100644
--- a/erpnext/sandbox/testdata/sle_data.py
+++ b/erpnext/sandbox/testdata/sle_data.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
# Existing SLE data
diff --git a/erpnext/sandbox/testdata/stock_entry.py b/erpnext/sandbox/testdata/stock_entry.py
index 91aaed4..e617c08 100644
--- a/erpnext/sandbox/testdata/stock_entry.py
+++ b/erpnext/sandbox/testdata/stock_entry.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
# Material Receipt
diff --git a/erpnext/sandbox/testdata/stock_reco.py b/erpnext/sandbox/testdata/stock_reco.py
index 14e28ff..87e3eb2 100644
--- a/erpnext/sandbox/testdata/stock_reco.py
+++ b/erpnext/sandbox/testdata/stock_reco.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
# Stock Reconciliation