I don't understand pop and push function here? Python

Question

class Queue:
def __init__(self, contents):
self._hiddenlist = list(contents)

def push(self, value):
self._hiddenlist.insert(0, value)

def pop(self):
return self._hiddenlist.pop(-1)

def __repr__(self):
return "Queue({})".format(self._hiddenlist)

queue = Queue([1, 2, 3])
print(queue)
queue.push(0)
print(queue)
queue.pop()
print(queue)
print(queue._hiddenlist)

Answer 1

push() and pop) are instance methods of a class Queue. push() inserts a new value at index 0 (left side) to the _hiddenlist, pop() removes the last value of the list. pop() and insert() are common list methods.

Answer 2

Lothar said all, what is to say, but read his words carefully:
Did u recognize that he mentioned the self defined method pop()
AND the standard method pop()?

we have two pop() functions here.