Example when request.POST contain query string in django
If your request is post:

request.method == 'POST'

but the requested url contains a query string. e.g:
/your-url?param1=value-one
you can still take POST parameters through:

request.POST.get("my-field", None)

and query string parameters through:

request.GET.get("param1")

althrough, you pick up all parameters at once (POST and GET), through REQUEST:

request.REQUEST['param1'] # comes from query string
request.REQUEST['my-field'] # comes from request BODY (POST)
Please post example code when request.POST contain query string in django, because i think my django version is bugged.
EDIT:
You simple can't, query string is always in GET, and this was my problem.