class item:

def __init__(self, name, type):
self.name = name
self.type = type

def GetName(self):
return name

def GetType(self):
return type
# end class item. как табуляции раставлять?
container = {}

# заполняем
container['1'] = item('1', 'first')
container['2'] = item('2', 'second')

# как проверить существует ли итем в словаре
# можно так
for item in container:
if item.GetType() == 'first':
printf 'exist'

# а как можно ещё. локаничнее и с лябдой

sum(1 for item in container if item.type == 'first')

E>class item:

E>  def __init__(self, name, type):
E>    self.name = name
E>    self.type = type
E>
E>  def GetName(self):
E>    return name
E>

return self.name

K>sum(1 for item in container if item.type == 'first')
K>

Sums start and the items of an iterable from left to right and returns the total. start defaults to 0. The iterable‘s items are normally numbers, and are not allowed to be strings. The fast, correct way to concatenate a sequence of strings is by calling ''.join(sequence). Note that sum(range(n), m) is equivalent to reduce(operator.add, range(n), m) To add floating point values with extended precision, see math.fsum().