Hello, I’m trying to create a list of objects with sublists, here’s my example:

```
class testobj:
def __init__(tst,lst = []):
tst.lst = lst
newList = []
for i in range(10):
newList.append(testobj())
for i in range(len(newList)):
newList[i].lst.append(1)
```

but this returns

```
>>> newList[0].lst
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
```

which is the not expected output (should return [1]).

If I do the same with a list of lists:

```
newList = []
for i in range(10):
newList.append([])
for i in range(len(newList)):
newList[i].append(1)
>>> newList[0]
[1]
```

Can someone help me spot the problem? Thanks