Question

I am quite often using Python instead of pseudocode. For that, I would like to have a stack. I know that using lists is the way to go (source), but I would like to use myList.push rather than myList.append to make clear that I use a stack.

I thought I could do something simple like

myList.push = myList.append

to define an alias for the append operation, but I get

    stack.push = stack.append
AttributeError: 'list' object has no attribute 'push'

Does a short solution for adding a push-operation to a list exist?

^{(It should not mess up my runnable Python-pseudocode)}

Answer 1

You can make a subclass of list like this:

class List(list):
    def push(self, x):
        self.append(x)

Use your custom class the same way you would use a regular list:

>>> s = List()
>>> s.push(10)
>>> s.push(20)
>>> s
[10, 20]