def join2(ol, *sps):
    """
        from elist.elist import *
        ol = [1,2,3,4]
        join2(ol,"-","+","*")
    """
    rslt = ''
    length = ol.__len__()
    for i in range(0, length - 1):
        rslt = rslt + str(ol[i]) + sps[i]
    rslt = rslt + str(ol[length - 1])
    return rslt
