>>> x = ([1,2,3,4],"whatever")
>>> x[0].append('z')
>>> x
([1, 2, 3, 4, 'z'], 'whatever')
And python gives you access to anything:
>>> def gotcha():
... z = globals()['x']
... z = list(z)
... z.append("I've seen'em do it man!")
... globals()['x'] = tuple(z)
...
>>> x = (1,2,3,4)
>>> gotcha()
>>> x
(1, 2, 3, 4, "I've seen'em do it man!")
It be shallow with a Singly Linked List too no? What inherently makes a Singly Linked List better at addressing this problem if it contains mutable elements?
Typically, in a functional language, values are immutable.
So if you cons to a list, you create a new value that has the current list as its tail. Since all lists are immutable, they can be shared and there's no need for a deep copy.
Python is not a functional programming language....
