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44 lines
906 B
44 lines
906 B
# small example for inhiterance with polymorphism
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# and duck typing as mostly better alternative
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class AudioFile:
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def __init__(self, filename):
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if not filename.endswith(self.ext):
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raise Exception("Invalid file format")
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self.filename = filename
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class MP3File(AudioFile):
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ext = "mp3"
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def play(self):
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print("Playing {} as mp3".format(self.filename))
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class WavFile(AudioFile):
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ext = "wav"
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def play(self):
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print("Playing {} as wav".format(self.filename))
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class OggFile(AudioFile):
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ext = "ogg"
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def play(self):
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print("Playing {} as ogg".format(self.filename))
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class FlacFile:
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def __init__(self, filename):
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if not filename.endswith(".flac"):
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raise Exception("Invalid file format")
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self.filename = filename
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def play(self):
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print("Playing {} as flac".format(self.filename))
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