human
I wrote the below code

    avail_pagesize = [page.size_kb for page in host_cell.mempages]
    avail_pagesize.sort(reverse=True)
    def verify_pagesizes(host_cell, inst_cell, avail_pagesize):
        inst_cell_mem = (inst_cell.memory * units.Ki)
        for pagesize in avail_pagesize:
            if host_cell.can_fit_hugepages(pagesize, inst_cell_mem):
                return pagesize
    if (inst_cell.pagesize == MEMPAGES_SMALL):
        return verify_pagesizes(host_cell, inst_cell, avail_pagesize[(-1):])
    elif (inst_cell.pagesize == MEMPAGES_LARGE):
        return verify_pagesizes(host_cell, inst_cell, avail_pagesize[:(-1)])
    elif (inst_cell.pagesize == MEMPAGES_ANY):
        return verify_pagesizes(host_cell, inst_cell, avail_pagesize)
    else:
        return verify_pagesizes(host_cell, inst_cell, [inst_cell.pagesize])

What's a good function header?
assistant
#Here's a good function header.

def _numa_cell_supports_pagesize_request(host_cell, inst_cell):