how can i make ~[0] plus to ~[1] in django?

1. codes:

   >>> from test2.models import Member_info
   
   >>> member = Member_info.objects.all()
   
   >>> member
   <QuerySet [<Member_info: John2>, <Member_info: John1>, <Member_info: John3>]>
   
   >>> member = Member_info.objects.all()[0]
   
   >>> member
   <Member_info: gun2>
   
   >>> member += Member_info.obejcts.all()[1]
   
   Traceback (most recent call last):
     File "<console>", line 1, in <module>
   AttributeError: type object 'Member_info' has no attribute 'obejcts'
   
   >>> member += Member_info.objects.all()[1]
   
   Traceback (most recent call last):
     File "<console>", line 1, in <module>
   TypeError: unsupported operand type(s) for +=: 'Member_info' and 'Member_info'
   
   >>> member.append(Member_info.objects.all()[1])
   
   Traceback (most recent call last):
     File "<console>", line 1, in <module>
   AttributeError: 'Member_info' object has no attribute 'append'
   
   

2.How can i append,,,,?