Source: sphinx
Version: 1.6.7-2
Severity: wishlist
Tags: patch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: toolchain randomness
X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org
Hi,
Whilst working on the Reproducible Builds effort [0], we noticed
that sphinx could generates output that is not reproducible.
In particular, the rendering of `set` objects in default arguments
and elsewhere is currently non-determinstic. For example:
class A_Class(object):
a_set = {'a', 'b', 'c'}
Might be rendered as any of:
{'a', 'b', 'c'}
{'a', 'c', 'b'}
{'b', 'a', 'c'}
{'b', 'c', 'a'}
{'c', 'a', 'b'}
{'c', 'b', 'a'}
Patch attached that sorts the contents of sets whilst rendering.
This is parallel to the 'dict' key sorting.
[0] https://reproducible-builds.org/
Regards,
--
,''`.
: :' : Chris Lamb
`. `'` la...@debian.org / chris-lamb.co.uk
`-
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 7042253..774d21a 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -211,6 +211,10 @@ def object_description(object):
else:
items = ("%r: %r" % (key, object[key]) for key in sorted_keys)
return "{%s}" % ", ".join(items)
+if isinstance(object, set):
+# Sort set contents
+template = "{%s}" if PY3 else "set([%s])"
+return template % ", ".join(repr(x) for x in sorted(object))
try:
s = repr(object)
except Exception:
diff --git a/tests/test_util_inspect.py b/tests/test_util_inspect.py
index a463f4f..fe85419 100644
--- a/tests/test_util_inspect.py
+++ b/tests/test_util_inspect.py
@@ -138,6 +138,14 @@ class TestObjectDescription(TestCase):
description = inspect.object_description(dictionary)
assert description == "{'a': 1, 'b': 4, 'c': 3, 'd': 2}"
+def test_set_sorting(self):
+set_ = set("gfedcba")
+description = inspect.object_description(set_)
+if PY3:
+assert description == "{'a', 'b', 'c', 'd', 'e', 'f', 'g'}"
+else:
+assert description == "set(['a', 'b', 'c', 'd', 'e', 'f', 'g'])"
+
def test_dict_customtype(self):
class CustomType(object):
def __init__(self, value):
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