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@@ -0,0 +1,51 @@
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+from functools import reduce
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+from operator import mul
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+
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+from flask_babel import gettext
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+
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+keywords = ('min',
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+ 'max',
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+ 'avg',
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+ 'sum',
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+ 'prod')
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+
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+
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+# required answerer function
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+# can return a list of results (any result type) for a given query
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+def answer(query):
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+ parts = query.query.split()
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+
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+ if len(parts) < 2:
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+ return []
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+
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+ try:
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+ args = map(float, parts[1:])
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+ except:
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+ return []
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+
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+ func = parts[0]
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+ answer = None
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+
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+ if func == 'min':
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+ answer = min(args)
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+ elif func == 'max':
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+ answer = max(args)
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+ elif func == 'avg':
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+ answer = sum(args)/len(args)
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+ elif func == 'sum':
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+ answer = sum(args)
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+ elif func == 'prod':
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+ answer = reduce(mul, args, 1)
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+
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+ if answer is None:
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+ return []
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+
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+ return [{'answer': unicode(answer)}]
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+
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+
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+# required answerer function
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+# returns information about the answerer
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+def self_info():
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+ return {'name': gettext('Statistics functions'),
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+ 'description': gettext('Compute {functions} of the arguments').format(functions='/'.join(keywords)),
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+ 'examples': ['avg 123 548 2.04 24.2']}
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