Python's object model

[Francois Bedard]

Hello,

I'm new at Python. In the following program, "stack_1 pops stack_2's
content" (that's actually what it prints), which is obviously not what
I'm after - nor would expect. Is this how Python's object model really
works (kindly explain), is there some arcane rule that I've missed, or
is there some obvious mistake I just can't see?

Aside from a few such quirks, it's quite an interesting language (I'm
using 1.5.1 - on both Linux and NT).

Thanks,

Francois

-------------------------------------

class Stack:
	stack = []

	def push(self, value):
		self.stack.append(value)
	
	def pop(self):
		result = self.stack[-1]
		del self.stack[-1]
		return result
		
class System:
	stack_1 = Stack()
	stack_2 = Stack()
	
	def __init__(self):
		self.stack_1.push('stack_1\'s content')
		self.stack_2.push('stack_2\'s content')
		print 'stack_1 pops', self.stack_1.pop()
		
# 'main'

system = System()