map and self

[Larry Whitley]

I'm having trouble understanding "self" when used within a map().  Here's my
problem:

class A:
    def __init__(self):
        self.cnt = 0

class B:
    def __init__(self):
        self.cntList = []
        for i in range(5):
            self.cntList.append( A() )
    def myprint(self):
        print map( lambda x: self.cntList[x].cnt, range(len(self.cntList)))

>>> b = B()
>>> b.cntList[1].cnt
0
>>> b.myprint()
Traceback (innermost last):
  File "<interactive input>", line 1, in ?
  File "<interactive input>", line 7, in myprint
  File "<interactive input>", line 7, in <lambda>
NameError: self

Yet, when I perform the above actions interactively, it works as expected.
(Note that I left "self" off here since it is inappropriate in outside the
context of a class.)

>>> cntList = []
>>> for i in range( 5 ):
>>>     cntList.append( A() )
>>> len(cntList)
5
>>> map( lambda x: cntList[x].cnt, range( len( cntList )))
[0, 0, 0, 0, 0]

So, my question... How do I get around the NameError: self problem and use
this sort of thing in methods internal to a class?

Larry