[3.13] gh-122478: Remove internal frames from tracebacks in REPL (GH-122528) by miss-islington · Pull Request #122817 · python/cpython · GitHub
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[3.13] gh-122478: Remove internal frames from tracebacks in REPL (GH-122528) #122817

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[3.13] gh-122478: Remove internal frames from tracebacks in REPL (GH-122528) #122817

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87 changes: 41 additions & 46 deletions Lib/code.py
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125 changes: 117 additions & 8 deletions Lib/test/test_code_module.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
"Test InteractiveConsole and InteractiveInterpreter from code module"
import sys
import traceback
import unittest
from textwrap import dedent
from contextlib import ExitStack
Expand Down Expand Up @@ -30,6 +31,7 @@ def mock_sys(self):


class TestInteractiveConsole(unittest.TestCase, MockSys):
maxDiff = None

def setUp(self):
self.console = code.InteractiveConsole()
Expand Down Expand Up @@ -61,21 +63,118 @@ def test_console_stderr(self):
raise AssertionError("no console stdout")

def test_syntax_error(self):
self.infunc.side_effect = ["undefined", EOFError('Finished')]
self.infunc.side_effect = ["def f():",
" x = ?",
"",
EOFError('Finished')]
self.console.interact()
for call in self.stderr.method_calls:
if 'NameError' in ''.join(call[1]):
break
else:
raise AssertionError("No syntax error from console")
output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
output = output[output.index('(InteractiveConsole)'):]
output = output[:output.index('\nnow exiting')]
self.assertEqual(output.splitlines()[1:], [
' File "<console>", line 2',
' x = ?',
' ^',
'SyntaxError: invalid syntax'])
self.assertIs(self.sysmod.last_type, SyntaxError)
self.assertIs(type(self.sysmod.last_value), SyntaxError)
self.assertIsNone(self.sysmod.last_traceback)
self.assertIsNone(self.sysmod.last_value.__traceback__)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)

def test_indentation_error(self):
self.infunc.side_effect = [" 1", EOFError('Finished')]
self.console.interact()
output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
output = output[output.index('(InteractiveConsole)'):]
output = output[:output.index('\nnow exiting')]
self.assertEqual(output.splitlines()[1:], [
' File "<console>", line 1',
' 1',
'IndentationError: unexpected indent'])
self.assertIs(self.sysmod.last_type, IndentationError)
self.assertIs(type(self.sysmod.last_value), IndentationError)
self.assertIsNone(self.sysmod.last_traceback)
self.assertIsNone(self.sysmod.last_value.__traceback__)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)

def test_unicode_error(self):
self.infunc.side_effect = ["'\ud800'", EOFError('Finished')]
self.console.interact()
output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
output = output[output.index('(InteractiveConsole)'):]
output = output[output.index('\n') + 1:]
self.assertTrue(output.startswith('UnicodeEncodeError: '), output)
self.assertIs(self.sysmod.last_type, UnicodeEncodeError)
self.assertIs(type(self.sysmod.last_value), UnicodeEncodeError)
self.assertIsNone(self.sysmod.last_traceback)
self.assertIsNone(self.sysmod.last_value.__traceback__)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)

def test_sysexcepthook(self):
self.infunc.side_effect = ["raise ValueError('')",
self.infunc.side_effect = ["def f():",
" raise ValueError('BOOM!')",
"",
"f()",
EOFError('Finished')]
hook = mock.Mock()
self.sysmod.excepthook = hook
self.console.interact()
self.assertTrue(hook.called)
hook.assert_called()
hook.assert_called_with(self.sysmod.last_type,
self.sysmod.last_value,
self.sysmod.last_traceback)
self.assertIs(self.sysmod.last_type, ValueError)
self.assertIs(type(self.sysmod.last_value), ValueError)
self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
'Traceback (most recent call last):\n',
' File "<console>", line 1, in <module>\n',
' File "<console>", line 2, in f\n',
'ValueError: BOOM!\n'])

def test_sysexcepthook_syntax_error(self):
self.infunc.side_effect = ["def f():",
" x = ?",
"",
EOFError('Finished')]
hook = mock.Mock()
self.sysmod.excepthook = hook
self.console.interact()
hook.assert_called()
hook.assert_called_with(self.sysmod.last_type,
self.sysmod.last_value,
self.sysmod.last_traceback)
self.assertIs(self.sysmod.last_type, SyntaxError)
self.assertIs(type(self.sysmod.last_value), SyntaxError)
self.assertIsNone(self.sysmod.last_traceback)
self.assertIsNone(self.sysmod.last_value.__traceback__)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
' File "<console>", line 2\n',
' x = ?\n',
' ^\n',
'SyntaxError: invalid syntax\n'])

def test_sysexcepthook_indentation_error(self):
self.infunc.side_effect = [" 1", EOFError('Finished')]
hook = mock.Mock()
self.sysmod.excepthook = hook
self.console.interact()
hook.assert_called()
hook.assert_called_with(self.sysmod.last_type,
self.sysmod.last_value,
self.sysmod.last_traceback)
self.assertIs(self.sysmod.last_type, IndentationError)
self.assertIs(type(self.sysmod.last_value), IndentationError)
self.assertIsNone(self.sysmod.last_traceback)
self.assertIsNone(self.sysmod.last_value.__traceback__)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
' File "<console>", line 1\n',
' 1\n',
'IndentationError: unexpected indent\n'])

def test_sysexcepthook_crashing_doesnt_close_repl(self):
self.infunc.side_effect = ["1/0", "a = 123", "print(a)", EOFError('Finished')]
Expand Down Expand Up @@ -167,6 +266,11 @@ def test_cause_tb(self):
ValueError
""")
self.assertIn(expected, output)
self.assertIs(self.sysmod.last_type, ValueError)
self.assertIs(type(self.sysmod.last_value), ValueError)
self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
self.assertIsNotNone(self.sysmod.last_traceback)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)

def test_context_tb(self):
self.infunc.side_effect = ["try: ham\nexcept: eggs\n",
Expand All @@ -185,6 +289,11 @@ def test_context_tb(self):
NameError: name 'eggs' is not defined
""")
self.assertIn(expected, output)
self.assertIs(self.sysmod.last_type, NameError)
self.assertIs(type(self.sysmod.last_value), NameError)
self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
self.assertIsNotNone(self.sysmod.last_traceback)
self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)


class TestInteractiveConsoleLocalExit(unittest.TestCase, MockSys):
Expand Down
3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Library/2024-07-31-20-43-21.gh-issue-122478.sCU2Le.rst
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