# -*- 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
from .X_Structure import X_Structure
from . import question
AVAILABLE_X_KIND_VALUES = {'preformatted': ['product'],
'bypass': ['sum', 'sum_of_products']}
X_LAYOUT_UNIT = "cm"
# ---------------------- lines_nb col_widths questions
# In each list, the first number is the number of lines (or the value '?'),
# then follow the columns widths. The tuple contains the questions per cell.
# For instance, [2, 6, 6, 6], (1, 1, 1, 1, 1, 1) means 2 lines, 3 cols (widths
# 6 cm each), then 1 question per cell.
X_LAYOUTS = {'default':
{'exc': [None, 'all'],
'ans': [None, 'all']}}
# ------------------------------------------------------------------------------
# --------------------------------------------------------------------------
# ------------------------------------------------------------------------------
##
# @class X_AlgebraExpressionReduction
# @brief This new exercise object should include all possible
# reduction exercises
[docs]class X_AlgebraExpressionReduction(X_Structure):
def __init__(self, x_kind='default_nothing', **options):
self.derived = True
X_Structure.__init__(self,
x_kind, AVAILABLE_X_KIND_VALUES, X_LAYOUTS,
X_LAYOUT_UNIT, **options)
# The purpose of this next line is to get the possibly modified
# value of **options
options = self.options
default_question = question.Q_AlgebraExpressionReduction
# TEXTS OF THE EXERCISES
self.text = {'exc': _("Reduce the following expressions:"),
'ans': ""}
# alternate texts section
if self.x_subkind == 'product':
self.text = {'exc': _("Reduce, if possible, the following "
"products:"),
'ans': _("Pay attention that the intermediate "
"line is optional.")}
# elif self.x_subkind == 'sum_of_products':
# self.text = _("Reduce the following expressions:")
elif self.x_subkind == 'sum':
self.text = {'exc': _("Reduce, if possible, the following sums:"),
'ans': _("Pay attention that the intermediate line "
"is optional.")}
# PREFORMATTED EXERCISES
if self.x_kind == 'preformatted':
if self.x_subkind == 'product':
self.questions_list.append(default_question(
q_kind='product',
expression_number=0,
use_these_letters=['a', 'b'],
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=1,
use_these_letters=['x', 'y'],
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=2,
use_these_letters=['t', 'u'],
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=3,
use_these_letters=['x', 'y', 'z'],
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=4,
use_these_letters=['p', 'q', 'r'],
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=5,
use_these_letters=['a', 'b', 'x'],
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=6,
use_reduced_alphabet='OK',
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=7,
use_these_letters=['a', 'b', 'x'],
nb_occurences_of_the_same_letter=1,
**options))
self.questions_list.append(default_question(
q_kind='product',
expression_number=8,
use_these_letters=['x', 'y'],
nb_occurences_of_the_same_letter=1,
**options))
# OTHER EXERCISES (BYPASS OPTION)
else:
for i in range(self.q_nb):
self.questions_list.append(
default_question(q_kind=self.x_subkind,
expression_number=i + self.start_number,
**options))