class  Seleccion(forms.Form):
    selec= forms.FileField()

def restaurar(request):
    if request.method == 'POST':
        form = forms.Seleccion(request.POST, request.FILES)
        handle_uploaded_file(request.FILES['file'])
        return render(request, 'index.html')
    else:
        form = forms.Seleccion()
        return render(request, 'salvas.html', {'form': form})

def handle_uploaded_file(f):
    with open('upload_salva.sql', 'wb+') as destination:
        for chunk in f.chunks():
            destination.write(chunk)

for filename, file in request.FILES.iteritems():
    archivo = request.FILES[filename]

file, value = request.FILES.popitem()
handle_uploaded_file(request.FILES[file]) # Notece que las comillas no van