yui = xi
data2 = open("data/DP/" + author.id + ".txt", "r")
dpr = data2.read()
data2.close()
data3 = open("data/DCK/" + deck + "/price.txt","r")
dpreco = data3.read()
data3.close()
dp = int(dpr)
precoo = int(dpreco)
type(dp)
preco = precoo * yui
if dp >= preco:
    dp = dp - preco
    dpr = str (dp)
    type(dpr)
    data = open ("data/DCK/" + deck + "/cards.txt", "r")
    lista = data.readlines()
    data.close()
    data5 = open("data/DP/" + author.id + ".txt", "w")
    data5.write(dpr)
    data5.close()
    again = 0
    aba = 0
    lista2 = []
    lista3 = []
    while again <= yui:
        while aba < 5:
            slct = random.choice(lista)
            lista2.append(slct)
            lista3.append(slct)
            if aba < 5:
                aba += 1
            if aba == 5:
                lista2.append("----------------n")
                again += 1
                aba = 0
            if yui == again:
                break
        if again == yui:
            data4 = open("data/CT/" + author.id + ".txt", "w")
            data4.writelines(lista2)
            data4.close()
            data6 = open("data/Listct/" + author.id + ".txt", "a")
            data6.writelines(lista3)
            data6.close()
            break