django-google-pagination.py

try:
    page_number = int(cur_page)
except ValueError:
    raise Http404

try:
    page_obj = paginator.page(page_number)
except InvalidPage:
    raise Http404

start = 0
offset_len = end = 10

if len(paginator.page_range) > offset_len:
    pages_to_end = paginator.page_range[-1] - page_obj.number
    
    if page_obj.number > 6:
        if pages_to_end < 6:
            start = page_obj.number - (offset_len - pages_to_end)
        else:
            start = page_obj.number - 6
    
        end = page_obj.number + 4