answerer.py

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# SPDX-License-Identifier: AGPL-3.0-or-later
from functools import reduce
from operator import mul
 
from flask_babel import gettext
 
 
keywords = ('min', 'max', 'avg', 'sum', 'prod')
 
 
# required answerer function
# can return a list of results (any result type) for a given query
def answer(query):
    parts = query.query.split()
 
    if len(parts) < 2:
        return []
 
    try:
        args = list(map(float, parts[1:]))
    except:
        return []
 
    func = parts[0]
    answer = None
 
    if func == 'min':
        answer = min(args)
    elif func == 'max':
        answer = max(args)
    elif func == 'avg':
        answer = sum(args) / len(args)
    elif func == 'sum':
        answer = sum(args)
    elif func == 'prod':
        answer = reduce(mul, args, 1)
 
    if answer is None:
        return []
 
    return [{'answer': str(answer)}]
 
 
# required answerer function
# returns information about the answerer
def self_info():
    return {
        'name': gettext('Statistics functions'),
        'description': gettext('Compute {functions} of the arguments').format(functions='/'.join(keywords)),
        'examples': ['avg 123 548 2.04 24.2'],
    }