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Issue 3976: fix pprint for sets, frozensets, and dicts containing unorderable types.

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This commit is contained in:
Raymond Hettinger 2009-11-19 01:02:56 +00:00
parent c566df3f55
commit b868e63443
3 changed files with 52 additions and 11 deletions
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19
Lib/test/test_pprint.py
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@ -2,6 +2,7 @@ import pprint
import test.support
import unittest
import test.test_set
import random
# list, tuple and dict subclasses that do or don't overwrite __repr__
class list2(list):
@ -25,6 +26,10 @@ class dict3(dict):
def __repr__(self):
return dict.__repr__(self)
class Unorderable:
def __repr__(self):
return str(id(self))
class QueryTestCase(unittest.TestCase):
def setUp(self):
@ -407,6 +412,20 @@ class QueryTestCase(unittest.TestCase):
self.assertEqual(pprint.pformat(nested_dict, depth=1), lv1_dict)
self.assertEqual(pprint.pformat(nested_list, depth=1), lv1_list)
def test_sort_unorderable_values(self):
# Issue 3976: sorted pprints fail for unorderable values.
n = 20
keys = [Unorderable() for i in range(n)]
random.shuffle(keys)
skeys = sorted(keys, key=id)
clean = lambda s: s.replace(' ', '').replace('\n','')
self.assertEqual(clean(pprint.pformat(set(keys))),
'{' + ','.join(map(repr, skeys)) + '}')
self.assertEqual(clean(pprint.pformat(frozenset(keys))),
'frozenset({' + ','.join(map(repr, skeys)) + '})')
self.assertEqual(clean(pprint.pformat(dict.fromkeys(keys))),
'{' + ','.join('%r:None' % k for k in skeys) + '}')
class DottedPrettyPrinter(pprint.PrettyPrinter):