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Add an experimental mechanism to support extending the pprint formatting.

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Partly responds to SF bug #505152.
This commit is contained in:
Fred Drake 2002-04-02 05:08:35 +00:00
parent 4993c51b94
commit aee113d368
3 changed files with 57 additions and 9 deletions
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21
Lib/test/test_pprint.py
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@ -96,6 +96,27 @@ class QueryTestCase(unittest.TestCase):
'write_io_runtime_us': 43690}"""
self.assertEqual(pprint.pformat(o), exp)
def test_subclassing(self):
o = {'names with spaces': 'should be presented using repr()',
'others.should.not.be': 'like.this'}
exp = """\
{'names with spaces': 'should be presented using repr()',
others.should.not.be: like.this}"""
self.assertEqual(DottedPrettyPrinter().pformat(o), exp)
class DottedPrettyPrinter(pprint.PrettyPrinter):
def format(self, object, context, maxlevels, level):
if isinstance(object, str):
if ' ' in object:
return `object`, 1, 0
else:
return object, 0, 0
else:
return pprint.PrettyPrinter.format(
self, object, context, maxlevels, level)
def test_main():
test_support.run_unittest(QueryTestCase)