my list is being changed

[ivinjjunior]

so if i put some very different name it might work?

---

actually i remember now, i have already done it, i'v named the "pedidosafe" as "hahaha" ( i was frustrated) and the problem still persisted

[Yoriz]

No changing the variable name wont do anything , it still points at the same objects
you need to use

The difference between shallow and deep copying is only relevant for compound objects (objects that contain other objects, like lists or class instances):

A shallow copy constructs a new compound object and then (to the extent possible) inserts references into it to the objects found in the original.

A deep copy constructs a new compound object and then, recursively, inserts copies into it of the objects found in the original.

import copy innerlist1 = [11111, 22222, 33333, 44444, 55555] innerlist2 = [0, 77777, 88888, 22222] innerlist3 = [22222, 11111, 33333, 44444] innerlist4 = [11111, 0], [55555, 88888] innerlist5 = [77777, 99999, 11111] innerlist6 = [22222, 55555, 33333, 99999] innerlist7 = [55555, 22222, 11111, 33333, 0, 44444, 77777] outerlist = [ innerlist1, innerlist2, innerlist3, innerlist4, innerlist5, innerlist6, innerlist7, ] outerlistcopy = copy.deepcopy(outerlist) print(outerlistcopy) innerlist1[0] = 99999 print(outerlistcopy) print(outerlist)

Output:
[[11111, 22222, 33333, 44444, 55555], [0, 77777, 88888, 22222], [22222, 11111, 33333, 44444], ([11111, 0], [55555, 88888]), [77777, 99999, 11111], [22222, 55555, 33333, 99999], [55555, 22222, 11111, 33333, 0, 44444, 77777]] [[11111, 22222, 33333, 44444, 55555], [0, 77777, 88888, 22222], [22222, 11111, 33333, 44444], ([11111, 0], [55555, 88888]), [77777, 99999, 11111], [22222, 55555, 33333, 99999], [55555, 22222, 11111, 33333, 0, 44444, 77777]] [[99999, 22222, 33333, 44444, 55555], [0, 77777, 88888, 22222], [22222, 11111, 33333, 44444], ([11111, 0], [55555, 88888]), [77777, 99999, 11111], [22222, 55555, 33333, 99999], [55555, 22222, 11111, 33333, 0, 44444, 77777]]

[ivinjjunior]

I am very beginner but i will try it out, if i got it right i need a deep copy of the list "pedidosafe" right?

like:

deepcopy(pedidosafe.append(itens_pedido[:]))

?

or pedidosafe.deepcopy()

i don know how to use it

[Yoriz]

add the import copy
change

pedidosafe.append(itens_pedido[:])

to

pedidosafe.append(copy.deepcopy(itens_pedido))

[ivinjjunior]

oh my good!! i got iiiit!! finally

i used this copy.copy in the end of the code.. it was the end of it that was creating the link between the lists..

Output:
 if menu != 0: controle_posi = 0 pedidos.clear() pedidosbk.clear() itendupl.clear() juntar.clear() for restart in pedidosafe: pedidos.append(restart) pedidosbk.append(restart) menu = 0 break

i replaced for :

Output:
 if menu != 0: controle_posi = 0 pedidos.clear() pedidosbk.clear() itendupl.clear() juntar.clear() for restart in pedidosafe: pedidos.append(copy.copy(restart)) pedidosbk.append(copy.copy(restart)) menu = 0 break

[ivinjjunior]

Working fine! Thank you :)