1 files changed, 23 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 7f2a5011..5099c1b1 100755
--- a/setup.py
+++ b/setup.py
@@ -1,10 +1,33 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
+# setup.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Setup file for bitmask.
+"""
 
 from __future__ import print_function
 
 import sys
 
+if not sys.version_info[0] == 2:
+    print("[ERROR] Sorry, Python 3 is not supported (yet). "
+          "Try running with python2: python2 setup.py ...")
+    exit()
+
 try:
     from setuptools import setup, find_packages
 except ImportError: