# -*- coding: utf-8 -*-
# Mathmaker creates automatically maths exercises sheets
# with their answers
# Copyright 2006-2017 Nicolas Hainaux <nh.techn@gmail.com>
# This file is part of Mathmaker.
# Mathmaker is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# any later version.
# Mathmaker is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with Mathmaker; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import random
from mathmaker.lib import shared
from mathmaker.lib.constants.latex import COLORED_QUESTION_MARK
from mathmaker.lib.core.base_calculus import Product
from mathmaker.lib.core.root_calculus import Value
from mathmaker.lib.document.content import component
[docs]class sub_object(component.structure):
def __init__(self, build_data, **options):
super().setup("minimal", **options)
if self.variant == 'with_a_decimal':
second_couple = shared.mc_source.next('int_deci_clever_pairs')
elif self.variant == 'integers_only':
second_couple = shared.mc_source.next('intpairs_2to500',
clever_in=[4, 5])
elif self.variant == 'fifths_series':
second_couple = shared.mc_source.next('intpairs_2to500',
clever=5,
union={
'table_name':
'int_deci_clever_pairs',
'clever': 5})
elif self.variant == 'quarters_series':
second_couple = shared.mc_source.next('intpairs_2to500',
clever=4,
union={
'table_name':
'int_deci_clever_pairs',
'clever': 4})
else:
second_couple = shared.mc_source.next('intpairs_2to500',
clever_in=[4, 5, 10],
union={
'table_name':
'int_deci_clever_pairs'})
# We shuffle the numbers in a special way
if len(build_data) == 1:
# There is only one number in addition to the 2 special ones
# so either we put it in the first place, or in the middle
# (not at the end, otherwise, the 2 special ones would be at the
# two first places)
special_ones = list(second_couple)
random.shuffle(special_ones)
all_nb = [list(build_data).pop(0), special_ones.pop(0)]
random.shuffle(all_nb)
all_nb += [special_ones.pop(0)]
else:
# It is assumed there are 2 build_data (so 4 altogether)
# In order to avoid having the two "special" numbers in a row at
# the two first places, we will shuffle all numbers in a special
# way.
if random.choice([True, False]):
# In this case, the first number will NOT be from the "special"
# ones, so no matter what follows
nb_to_use = list(build_data)
random.shuffle(nb_to_use)
all_nb = [nb_to_use.pop(0)]
remaining = nb_to_use + list(second_couple)
else:
# In this case, it will, so, at the second place we put a
# number from the other source (the user specified one)
first_couple = list(build_data)
random.shuffle(first_couple)
nb_to_use = list(second_couple)
random.shuffle(nb_to_use)
all_nb = [nb_to_use.pop(0), first_couple.pop(0)]
remaining = nb_to_use + first_couple
random.shuffle(remaining)
all_nb += remaining
super().setup("numbers", nb=all_nb, shuffle_nbs=False, **options)
self.transduration = 15
product = Product([getattr(self,
'nb' + str(i + 1))
for i in range(self.nb_nb)])
self.product_str = product.printed
self.result = product.evaluate()
[docs] def q(self, **options):
self.substitutable_question_mark = True
return _('{math_expr} = {q_mark}').format(
math_expr=shared.machine.write_math_style2(self.product_str),
q_mark=COLORED_QUESTION_MARK)
[docs] def a(self, **options):
# This is actually meant for self.preset == 'mental calculation'
return Value(self.result).into_str()
[docs] def js_a(self, **kwargs):
return [Value(self.result).jsprinted]