# -*- 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 .X_Structure import X_Structure
from . import question
AVAILABLE_X_KIND_VALUES = \
{'short_test': ['sign_expansion', 'medium_level',
'three_binomials', 'three_numeric_binomials',
'default'],
'mini_test': ['two_randomly'],
'bypass': ['sign_expansion', 'sum_of_any_basic_expd',
'sum_square', 'difference_square', 'squares_difference',
'any_binomial', 'polyn1_polyn1']}
DEFAULT_RATIO_MIXED_MONOM_POLYN1 = 0.5
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']},
('short_test', 'three_numeric_binomials'):
{'exc': [None, 'all'],
'ans': [[1, 5.5, 5.5], (2, 1)], }}
# ------------------------------------------------------------------------------
# --------------------------------------------------------------------------
# ------------------------------------------------------------------------------
##
# @class X_AlgebraExpressionExpansion
# @brief Expressions to expand (like 2(x-3) or 4x(2-9x) or (3+x)(x-1))
[docs]class X_AlgebraExpressionExpansion(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_AlgebraExpressionExpansion
# TEXTS OF THE EXERCISE
self.text = {'exc': _("Expand and reduce") + ": ",
'ans': ""}
# alternate texts section
if self.x_subkind == 'three_numeric_binomials':
self.text = {'exc': _("Calculate thanks to a binomial "
"identity:"),
'ans': ""}
# PREFORMATTED EXERCISES
if self.x_kind == 'mini_test':
if self.x_subkind == 'two_randomly':
if random.choice([True, False]):
q = default_question(q_kind='sign_expansion_short_test',
expression_number=self.start_number,
**options)
self.questions_list.append(q)
q = default_question(
q_kind='polyn1_polyn1',
expression_number=self.start_number + 1,
**options)
self.questions_list.append(q)
else:
q = default_question(q_kind='monom01_polyn1',
expression_number=self.start_number,
**options)
self.questions_list.append(q)
q = default_question(
q_kind='sum_of_any_basic_expd',
q_subkind='easy',
expression_number=self.start_number + 1,
**options)
self.questions_list.append(q)
# OTHER EXERCISES
else:
for i in range(self.q_nb):
q = default_question(
q_kind=self.x_subkind,
expression_number=i + self.start_number,
**options)
self.questions_list.append(q)