def remove_duplicates(lst):
    u = {}
    for x in lst:
        u[x] = 1

    return u.keys()
remove_duplicates([2,2,2,1,3,3]) => [3,1,2]
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/SimpleXMLRPCServer.py/remove_duplicates