-# Copyright
+# Copyright (C) 2012 W. Trevor King <wking@tremily.us>
+#
+# This file is part of pygrader.
+#
+# pygrader 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.
+#
+# pygrader 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
+# pygrader. If not, see <http://www.gnu.org/licenses/>.
import sys as _sys
from .color import write_color as _write_color
-def tabulate(course, statistics=False, stream=None, use_color=False, **kwargs):
+def tabulate(course, statistics=False, stream=None, use_color=None, **kwargs):
"""Return a table of student's grades to date
"""
if stream is None: