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# tag::LOTTERY_BLOWER[]

import random

from tombola import Tombola

class LottoBlower(Tombola):

def __init__(self, iterable):

self._balls = list(iterable) # <1>

def load(self, iterable):

self._balls.extend(iterable)

def pick(self):

try:

position = random.randrange(len(self._balls)) # <2>

except ValueError:

raise LookupError('pick from empty LottoBlower')

return self._balls.pop(position) # <3>

def loaded(self): # <4>

return bool(self._balls)

def inspect(self): # <5>

return tuple(self._balls)

# end::LOTTERY_BLOWER[]