* add an unzip function
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@@ -18,6 +18,9 @@ class UtilError(Exception):
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# string/list functions
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# string/list functions
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def unzip(seq):
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return zip(*seq)
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def concat(l):
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def concat(l):
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"""concatenate a list of lists"""
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"""concatenate a list of lists"""
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return reduce( lambda x,y: x+y, l )
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return reduce( lambda x,y: x+y, l )
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