Have pprint() respect the order in an OrderedDict.
diff --git a/Lib/pprint.py b/Lib/pprint.py
index b3a6446..b8417f5 100644
--- a/Lib/pprint.py
+++ b/Lib/pprint.py
@@ -35,7 +35,7 @@
"""
import sys as _sys
-
+from collections import OrderedDict as _OrderedDict
from io import StringIO as _StringIO
__all__ = ["pprint","pformat","isreadable","isrecursive","saferepr",
@@ -163,7 +163,7 @@
if sepLines:
r = getattr(typ, "__repr__", None)
- if issubclass(typ, dict) and r is dict.__repr__:
+ if issubclass(typ, dict):
write('{')
if self._indent_per_level > 1:
write((self._indent_per_level - 1) * ' ')
@@ -171,7 +171,10 @@
if length:
context[objid] = 1
indent = indent + self._indent_per_level
- items = sorted(object.items(), key=_safe_tuple)
+ if issubclass(typ, _OrderedDict):
+ items = list(object.items())
+ else:
+ items = sorted(object.items(), key=_safe_tuple)
key, ent = items[0]
rep = self._repr(key, context, level)
write(rep)
diff --git a/Lib/test/test_pprint.py b/Lib/test/test_pprint.py
index ad3a193..1a38ece 100644
--- a/Lib/test/test_pprint.py
+++ b/Lib/test/test_pprint.py
@@ -3,6 +3,8 @@
import unittest
import test.test_set
import random
+import collections
+import itertools
# list, tuple and dict subclasses that do or don't overwrite __repr__
class list2(list):
@@ -195,6 +197,20 @@
self.assertEqual(pprint.pformat({"xy\tab\n": (3,), 5: [[]], (): {}}),
r"{5: [[]], 'xy\tab\n': (3,), (): {}}")
+ def test_ordered_dict(self):
+ words = 'the quick brown fox jumped over a lazy dog'.split()
+ d = collections.OrderedDict(zip(words, itertools.count()))
+ self.assertEqual(pprint.pformat(d),
+"""\
+{'the': 0,
+ 'quick': 1,
+ 'brown': 2,
+ 'fox': 3,
+ 'jumped': 4,
+ 'over': 5,
+ 'a': 6,
+ 'lazy': 7,
+ 'dog': 8}""")
def test_subclassing(self):
o = {'names with spaces': 'should be presented using repr()',
'others.should.not.be': 'like.this'}
diff --git a/Misc/NEWS b/Misc/NEWS
index 148ee79..0849bd9 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -16,6 +16,9 @@
Library
-------
+- The pprint module now supports printing OrderedDicts in their given
+ order (formerly, it would sort the keys).
+
- Logging: Added QueueHandler class to facilitate logging usage with
multiprocessing.