25 lines
588 B
Python
25 lines
588 B
Python
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from sys import argv, exit
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class DefaultDict(dict):
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def __init__(self,default):
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super(DefaultDict, self).__init__()
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self.default = default
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def __getitem__(self, key):
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return self.get(key, self.default)
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if len(argv) <= 2:
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print("%s <format_left> <format_right>" % argv[0])
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exit(1)
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format_left = argv[1]
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format_right = argv[2]
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cache = DefaultDict("")
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_format = lambda: '%{l}' + (format_left % cache) + '%{r}' + (format_right % cache)
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while True:
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print(_format())
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tag,content = input().rstrip('\n').split(' ',1)
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cache[tag] = content
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