assignee=Noneclosed_at=Nonecreated_at=<Date2013-05-02.00:43:02.387>labels= ['type-bug','library']title='argparse: mutually exclusive groups full of help-suppressed args can cause AssertionErrors'updated_at=<Date2021-12-10.16:06:27.619>user='https://bugs.python.org/gholms'

activity=<Date2021-12-10.16:06:27.619>actor='iritkatriel'assignee='none'closed=Falseclosed_date=Nonecloser=Nonecomponents= ['Library (Lib)']creation=<Date2013-05-02.00:43:02.387>creator='gholms'dependencies= []files= ['30102','30108','30110']hgrepos= ['187']issue_num=17890keywords= ['patch']message_count=17.0messages= ['188250','188253','188278','188291','188295','188306','188337','188379','188413','188984','189054','189064','189065','189355','193191','259189','408217']nosy_count=8.0nosy_names= ['terry.reedy','bethard','r.david.murray','martin.panter','paul.j3','Yogesh.Chaudhari','gholms','iritkatriel']pr_nums= []priority='normal'resolution='fixed'stage='patch review'status='pending'superseder=Nonetype='behavior'url='https://bugs.python.org/issue17890'versions= ['Python 2.7','Python 3.3','Python 3.4']