python: list

   #去重
    A = ['geovindu','刘杰','江山','河水','刘杰','geovindu','张三','李五']
    B = []
    for i in A:
        if i not in B:
            B.append(i)
    print(B)
    C = set(A)
    print(list(C))

    # 移动位置 从index=3 要移的index 指定的位置index 1
    index=1  #新位置
    oldindex=3 #旧位置
    show = ['2A', '3B', '1C', '4E', '5A']
    temp = show[oldindex]
    for k in range(oldindex, index, -1): #移到index 1
        show[k] = show[k - 1]
    show[index] = temp
    print(show)
    print('*********')
    #移到index 0
    index=0 #新位置
    oldindex=3 #旧位置
    show = ['2A', '3B', '1C', '4E', '5A']
    temp = show[oldindex]
    for k in range(oldindex,index, -1):
        show[k] = show[k - 1]
    show[index] = temp
    print(show)
    print('*********')
    # 移除
    wait = [3001, 4001, 5001, 2001, 2002, 3002, 2003, 4002, 2004, 2005]
    delindex = 2 #位置
    for k in range(delindex, len(wait) - 1):
        wait[k] = wait[k + 1]
    wait[len(wait) - 1] = 0
    print(wait)
    print('*********')
    # 添加一个  添加位置 index 4
    index=4 #新位置
    wait = [3001, 4001, 5001, 2001, 2002, 3002, 2003, 4002, 2004, 2005]
    wait = wait + [0]
    for k in range(len(wait) - 1, index, -1):
        wait[k] = wait[k - 1]
    wait[index] = 9001
    print(wait)
    print('*********')
    # 添加一个 添加位置index 3
    eca = ["Tony", "Paul", "Kelly", "Wendy", "Jack"]
    eca = eca + ['']
    index=3 #新位置
    nn = len(eca);
    for k in range(nn - 1, index, -1):
        eca[k] = eca[k - 1]
    eca[index] = "viky"
    print(eca)