45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
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"""
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This class is inspired by the Black Knight scene in the movie
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"Monty Python and the Holy Grail", where King Arthur fights the
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Black Knight, slicing off his arms and legs, but the knight
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refuses to concede defeat.
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# tag::BLACK_KNIGHT_DEMO[]
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>>> knight = BlackKnight()
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>>> knight.member
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next member is:
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'an arm'
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>>> del knight.member
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BLACK KNIGHT (loses an arm) -- 'Tis but a scratch.
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>>> del knight.member
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BLACK KNIGHT (loses another arm) -- It's just a flesh wound.
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>>> del knight.member
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BLACK KNIGHT (loses a leg) -- I'm invincible!
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>>> del knight.member
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BLACK KNIGHT (loses another leg) -- All right, we'll call it a draw.
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# end::BLACK_KNIGHT_DEMO[]
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"""
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# tag::BLACK_KNIGHT[]
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class BlackKnight:
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def __init__(self):
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self.phrases = [
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('an arm', "'Tis but a scratch."),
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('another arm', "It's just a flesh wound."),
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('a leg', "I'm invincible!"),
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('another leg', "All right, we'll call it a draw.")
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]
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@property
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def member(self):
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print('next member is:')
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return self.phrases[0][0]
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@member.deleter
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def member(self):
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member, text = self.phrases.pop(0)
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print(f'BLACK KNIGHT (loses {member}) -- {text}')
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# end::BLACK_KNIGHT[]
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