assignee=Noneclosed_at=Nonecreated_at=<Date2019-01-16.10:34:07.787>labels= ['type-bug','3.7','expert-asyncio']title='traceback.clear_frames manages to deadlock a background task'updated_at=<Date2019-01-17.00:50:59.457>user='https://github.com/tvoinarovskyi'

activity=<Date2019-01-17.00:50:59.457>actor='tvoinarovskyi'assignee='none'closed=Falseclosed_date=Nonecloser=Nonecomponents= ['asyncio']creation=<Date2019-01-16.10:34:07.787>creator='tvoinarovskyi'dependencies= []files= ['48059']hgrepos= []issue_num=35751keywords= []message_count=4.0messages= ['333759','333770','333775','333808']nosy_count=3.0nosy_names= ['asvetlov','yselivanov','tvoinarovskyi']pr_nums= []priority='normal'resolution=Nonestage=Nonestatus='open'superseder=Nonetype='behavior'url='https://bugs.python.org/issue35751'versions= ['Python 3.6','Python 3.7']