foo = [x for x in bar if x.occupants > 1]

>>> numbers = [12, 34, 1, 4, 4, 67, 37, 9, 0, 81]

result = []
for index in range(len(numbers)):
    if numbers[index] > 5:
        result.append(numbers[index])
print result  #Prints [12, 34, 67, 37, 9, 81]

result = []
for number in numbers:
    if number > 5:
        result.append(number)
print result  #Prints [12, 34, 67, 37, 9, 81]

result = [number for number in numbers if number > 5]

[function(number) for number in numbers if condition(number)]

result = filter(lambda x: x > 5, numbers)

result = map(function, filter(condition, numbers)) #result is a list in Py2

>>> class Bar(object):
...   def __init__(self, occupants):
...     self.occupants = occupants
...
>>> bar=[Bar(0), Bar(1), Bar(2), Bar(3)]
>>> foo = [x for x in bar if x.occupants > 1]
>>> foo
[<__main__.Bar object at 0xb748516c>, <__main__.Bar object at 0xb748518c>]

>>> Bar.__repr__=lambda self:"Bar(occupants={0})".format(self.occupants)
>>> foo
[Bar(occupants=2), Bar(occupants=3)]