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bpo-33065: Fix problem debugging user classes with __repr__ method (GH-24183)

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If __repr__ uses instance attributes, as normal, and one steps
through the __init__ method, debugger may try to get repr before
the instance attributes exist.  reprlib.repr handles the error.
This commit is contained in:
Terry Jan Reedy 2021-01-10 01:59:47 -05:00 • committed by GitHub
parent d16f6176ab
commit 81f87bbf9f
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4 changed files with 20 additions and 3 deletions
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14
Lib/idlelib/idle_test/test_debugger_r.py
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@ -25,5 +25,19 @@ class Test(unittest.TestCase):
# Classes GUIProxy, IdbAdapter, FrameProxy, CodeProxy, DictProxy,
# GUIAdapter, IdbProxy plus 7 module functions.
class IdbAdapterTest(unittest.TestCase):
def test_dict_item_noattr(self): # Issue 33065.
class BinData:
def __repr__(self):
return self.length
debugger_r.dicttable[0] = {'BinData': BinData()}
idb = debugger_r.IdbAdapter(None)
self.assertTrue(idb.dict_item(0, 'BinData'))
debugger_r.dicttable.clear()
if __name__ == '__main__':
unittest.main(verbosity=2)