31 lines
642 B
Python
31 lines
642 B
Python
# tag::LOTTERY_BLOWER[]
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import random
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from tombola import Tombola
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class LotteryBlower(Tombola):
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def __init__(self, iterable):
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self._balls = list(iterable) # <1>
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def load(self, iterable):
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self._balls.extend(iterable)
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def pick(self):
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try:
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position = random.randrange(len(self._balls)) # <2>
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except ValueError:
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raise LookupError('pick from empty BingoCage')
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return self._balls.pop(position) # <3>
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def loaded(self): # <4>
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return bool(self._balls)
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def inspect(self): # <5>
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return tuple(sorted(self._balls))
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# end::LOTTERY_BLOWER[]
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