--- /dev/null
+# Copyright 2000 by Jeffrey Chang. All rights reserved.
+# This code is part of the Biopython distribution and governed by its
+# license. Please see the LICENSE file that should have been included
+# as part of this package.
+"""Collection of modules for dealing with biological data in Python.
+
+The Biopython Project is an international association of developers
+of freely available Python tools for computational molecular biology.
+
+http://biopython.org
+"""
+
+__version__ = "1.50"
+
+class MissingExternalDependencyError(Exception):
+ pass