Port to Python 3.

src/allmydata/immutable/literal.py

@@ -1,3 +1,16 @@
+"""
+Ported to Python 3.
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from future.utils import PY2
+if PY2:
+    from future.builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, bytes, dict, list, object, range, str, max, min  # noqa: F401
+
 from io import BytesIO
 
 from zope.interface import implementer

src/allmydata/util/_python3.py

@@ -33,6 +33,7 @@ PORTED_MODULES = [
     "allmydata.crypto.util",
     "allmydata.hashtree",
     "allmydata.immutable.happiness_upload",
+    "allmydata.immutable.literal",
     "allmydata.interfaces",
     "allmydata.monitor",
     "allmydata.storage.common",