def chk_chng(src_flist,dst_flist):
    """ Returns unchanged file list and changed file list
        Accepts source file list and dsetination file list"""
    uc_flist = []
    c_flist = []
    for files in src_flist:
        if files in dst_flist:
            uc_flist.append(files)
        else:
            c_flist.append(files)
    return uc_flist,c_flist