Finish porting to Python 3.

src/allmydata/storage/crawler.py

@@ -1,4 +1,19 @@
-from future.utils import native_str, PY3
+"""
+Crawl the storage server shares.
+
+Ported to Python 3.
+"""
+
+from __future__ import unicode_literals
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+from future.utils import PY2, PY3
+if PY2:
+    # We don't import bytes, object, dict, and list just in case they're used,
+    # so as not to create brittle pickles with random magic objects.
+    from builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, range, str, max, min  # noqa: F401
 
 import os, time, struct
 try:

src/allmydata/test/test_crawler.py

@@ -1,3 +1,9 @@
+"""
+Tests for allmydata.storage.crawler.
+
+Ported to Python 3.
+"""
+
 from __future__ import print_function
 from __future__ import division
 from __future__ import absolute_import

src/allmydata/util/_python3.py

@@ -32,6 +32,7 @@ PORTED_MODULES = [
     "allmydata.crypto.util",
     "allmydata.hashtree",
     "allmydata.immutable.happiness_upload",
+    "allmydata.storage.crawler",
     "allmydata.test.common_py3",
     "allmydata.util._python3",
     "allmydata.util.abbreviate",