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v0.8.1
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Revision dae5d728bc3f1d4039b64e4ec3a9036fd5d19587 authored by Miss Islington (bot) on 10 November 2020, 19:58:27 UTC, committed by GitHub on 10 November 2020, 19:58:27 UTC
Fix an assertion error in format() in debug build for floating point formatting with "n" format, zero padding and small width. Release build is not impacted. Patch by Karthikeyan Singaravelan. (cherry picked from commit 3f7983a25a3d19779283c707fbdd5bc91b1587ef) Co-authored-by: Xtreak <tir.karthi@gmail.com>
1 parent a63234c
Tip revision: dae5d728bc3f1d4039b64e4ec3a9036fd5d19587 authored by Miss Islington (bot) on 10 November 2020, 19:58:27 UTC
bpo-35560: Remove assertion from format(float, "n") (GH-11288) (GH-23231)
bpo-35560: Remove assertion from format(float, "n") (GH-11288) (GH-23231)
Tip revision: dae5d72
test_frame.py
import gc
import sys
import types
import unittest
import weakref
from test import support
class ClearTest(unittest.TestCase):
"""
Tests for frame.clear().
"""
def inner(self, x=5, **kwargs):
1/0
def outer(self, **kwargs):
try:
self.inner(**kwargs)
except ZeroDivisionError as e:
exc = e
return exc
def clear_traceback_frames(self, tb):
"""
Clear all frames in a traceback.
"""
while tb is not None:
tb.tb_frame.clear()
tb = tb.tb_next
def test_clear_locals(self):
class C:
pass
c = C()
wr = weakref.ref(c)
exc = self.outer(c=c)
del c
support.gc_collect()
# A reference to c is held through the frames
self.assertIsNot(None, wr())
self.clear_traceback_frames(exc.__traceback__)
support.gc_collect()
# The reference was released by .clear()
self.assertIs(None, wr())
def test_clear_generator(self):
endly = False
def g():
nonlocal endly
try:
yield
inner()
finally:
endly = True
gen = g()
next(gen)
self.assertFalse(endly)
# Clearing the frame closes the generator
gen.gi_frame.clear()
self.assertTrue(endly)
def test_clear_executing(self):
# Attempting to clear an executing frame is forbidden.
try:
1/0
except ZeroDivisionError as e:
f = e.__traceback__.tb_frame
with self.assertRaises(RuntimeError):
f.clear()
with self.assertRaises(RuntimeError):
f.f_back.clear()
def test_clear_executing_generator(self):
# Attempting to clear an executing generator frame is forbidden.
endly = False
def g():
nonlocal endly
try:
1/0
except ZeroDivisionError as e:
f = e.__traceback__.tb_frame
with self.assertRaises(RuntimeError):
f.clear()
with self.assertRaises(RuntimeError):
f.f_back.clear()
yield f
finally:
endly = True
gen = g()
f = next(gen)
self.assertFalse(endly)
# Clearing the frame closes the generator
f.clear()
self.assertTrue(endly)
@support.cpython_only
def test_clear_refcycles(self):
# .clear() doesn't leave any refcycle behind
with support.disable_gc():
class C:
pass
c = C()
wr = weakref.ref(c)
exc = self.outer(c=c)
del c
self.assertIsNot(None, wr())
self.clear_traceback_frames(exc.__traceback__)
self.assertIs(None, wr())
class FrameLocalsTest(unittest.TestCase):
"""
Tests for the .f_locals attribute.
"""
def make_frames(self):
def outer():
x = 5
y = 6
def inner():
z = x + 2
1/0
t = 9
return inner()
try:
outer()
except ZeroDivisionError as e:
tb = e.__traceback__
frames = []
while tb:
frames.append(tb.tb_frame)
tb = tb.tb_next
return frames
def test_locals(self):
f, outer, inner = self.make_frames()
outer_locals = outer.f_locals
self.assertIsInstance(outer_locals.pop('inner'), types.FunctionType)
self.assertEqual(outer_locals, {'x': 5, 'y': 6})
inner_locals = inner.f_locals
self.assertEqual(inner_locals, {'x': 5, 'z': 7})
def test_clear_locals(self):
# Test f_locals after clear() (issue #21897)
f, outer, inner = self.make_frames()
outer.clear()
inner.clear()
self.assertEqual(outer.f_locals, {})
self.assertEqual(inner.f_locals, {})
def test_locals_clear_locals(self):
# Test f_locals before and after clear() (to exercise caching)
f, outer, inner = self.make_frames()
outer.f_locals
inner.f_locals
outer.clear()
inner.clear()
self.assertEqual(outer.f_locals, {})
self.assertEqual(inner.f_locals, {})
if __name__ == "__main__":
unittest.main()
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