krotka = (1,2,3,4)
lista = [1,2,3,4,1,2,3]
x = set(lista)
y = {4,5,6,7,8}
print(x)

#set()
#x.add(4)
#x.remove(6)
#x.discard(1)
#p = x.pop()
#x.clear()
#z = x.union(y)
#v = x.intersection(y)
#x.difference_update(y)


print(tuple(lista))
print(set(lista))
print(list(krotka))

if 4 in lista:
    print("Jest")
else:
    print("nie ma")

for i in x:
    print(i)

print(len(krotka))


child1 = {
  "name" : {
      "x" : 2020,
      "Emil" : 2004
  },
  "year" : 2004
}

myfamily = {
  "d1" : child1,
}

print(myfamily["d1"]["name"]["x"])