assignee=Noneclosed_at=Nonecreated_at=<Date2021-01-09.14:34:59.534>labels= ['3.8','type-bug','library','3.9','3.10']title='argparse incorrectly shows help string on a new line in case of long command string'updated_at=<Date2021-01-22.19:25:32.221>user='https://github.com/DiPaolo'

activity=<Date2021-01-22.19:25:32.221>actor='paul.j3'assignee='none'closed=Falseclosed_date=Nonecloser=Nonecomponents= ['Library (Lib)']creation=<Date2021-01-09.14:34:59.534>creator='DiPaolo'dependencies= []files= ['49730']hgrepos= []issue_num=42875keywords= ['patch']message_count=2.0messages= ['384728','385508']nosy_count=3.0nosy_names= ['rhettinger','paul.j3','DiPaolo']pr_nums= ['24177']priority='normal'resolution=Nonestage='patch review'status='open'superseder=Nonetype='behavior'url='https://bugs.python.org/issue42875'versions= ['Python 3.8','Python 3.9','Python 3.10']