1 files changed, 18 insertions, 0 deletions
diff --git a/lib/spack/external/py/_std.py b/lib/spack/external/py/_std.py
new file mode 100644
index 0000000000..97a9853323
--- /dev/null
+++ b/lib/spack/external/py/_std.py
@@ -0,0 +1,18 @@
+import sys
+
+class Std(object):
+    """ makes top-level python modules available as an attribute,
+        importing them on first access.
+    """
+
+    def __init__(self):
+        self.__dict__ = sys.modules
+
+    def __getattr__(self, name):
+        try:
+            m = __import__(name)
+        except ImportError:
+            raise AttributeError("py.std: could not import %s" % name)
+        return m
+
+std = Std()