Warning for assignment of mutables

[boolean-light]

I've run into lots of bugs related to assignments of mutables (e.g. lists, dicts, sets), like this:

array = [1, 2, 3]
temp_array = array
temp_array[0] = 42  # This will change content of original array also!
print(temp_array)  # [42, 2, 3]
print(array)  # [42, 2, 3]

But as far as I know, there are no rules which gives warning about this.
Could we add warning or possibly fixes (e.g. suggesting copy or deepcopy)?

Probably because it requires type inference, it will be difficult to make it work for something like this:

array = [1, 2, 3]  # This is not intended to be modified

def change_first(arr):
    arr[0] = 42
    return arr

add_first(array)  # This will change the array
print(array)  # [42, 2, 3]

But I think we could do this, like for first example, where the type of variable is straightforward.