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[3.6] bpo-28603: Fix formatting tracebacks for unhashable exceptions (GH-4014) (#4024)

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(cherry picked from commit de86073a76)
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Miss Islington (bot) 2017-10-17 15:14:19 -07:00 • committed by Serhiy Storchaka
parent 858ea4354f
commit 2712247ec9
9 changed files with 114 additions and 9 deletions
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6
Lib/idlelib/run.py
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@ -203,16 +203,16 @@ def print_exception():
seen = set()
def print_exc(typ, exc, tb):
seen.add(exc)
seen.add(id(exc))
context = exc.__context__
cause = exc.__cause__
if cause is not None and cause not in seen:
if cause is not None and id(cause) not in seen:
print_exc(type(cause), cause, cause.__traceback__)
print("\nThe above exception was the direct cause "
"of the following exception:\n", file=efile)
elif (context is not None and
not exc.__suppress_context__ and
context not in seen):
id(context) not in seen):
print_exc(type(context), context, context.__traceback__)
print("\nDuring handling of the above exception, "
"another exception occurred:\n", file=efile)