# -*- 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 string import ascii_uppercase as alphabet
from mathmaker.lib.core.calculus import Expression
from .X_Structure import X_Structure
from . import question
# Here the list of available values for the parameter x_kind='' and the
# matching self.x_subkind values
# Note: the bypass value allows to give the value of *x_subkind* directly to
# the matching question Constructor, bypassing the action of the present class
AVAILABLE_X_KIND_VALUES = \
{'preformatted': ['level_01_easy',
'level_03_sum_squares',
'level_03_difference_squares',
'level_03_squares_differences',
'level_03_some_not_factorizable'],
'bypass': ['level_01']
}
X_LAYOUT_UNIT = "cm"
ALT_DEFAULT_LAYOUT = {'exc': [None, 'all'],
'ans': [[2, 9, 9], (1, 1,
1, 1),
None, 1]
}
# ---------------------- 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': [[1, 6, 6, 6], (1, 1, 1)]
},
('preformatted', 'level_01_easy'):
{'exc': [None, 'all'],
'ans': [['?', 6, 6, 6], 'all']
},
('preformatted', 'level_03_some_not_factorizable'):
{'exc': [None, 'all'],
'ans': [['?', 6, 6, 6], 'all']
},
('bypass', 'level_01'):
{'exc': [None, 'all'],
'ans': [['?', 9, 9], 'all']
}
}
# ------------------------------------------------------------------------------
# --------------------------------------------------------------------------
# ------------------------------------------------------------------------------
##
# @class X_Factorization
# @brief Factorization exercises.
[docs]class X_Factorization(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
# BEGINING OF THE ZONE TO REWRITE -------------------------------------
default_question = question.Q_Factorization
# TEXTS OF THE EXERCISE
self.text = {'exc': _("Factorise: "),
'ans': ""
}
# alternate texts section
if self.x_kind == 'level_03_some_not_factorizable':
# __
self.text = {'exc': _("Factorise, if possible:"),
'ans': ""
}
# PREFORMATTED EXERCISES
if self.x_kind == 'preformatted':
if self.x_subkind == 'level_01_easy':
# n is the number of questions still left to do
n = 10
lil_box = []
lil_box.append(default_question(
q_kind='level_01',
q_subkind='ax² + bx',
expression_number=10 - n))
n -= 1
if random.choice([True, False]):
lil_box.append(default_question(q_kind='level_01',
q_subkind='ax² + bx',
expression_number=10 - n))
n -= 1
lil_box.append(default_question(
q_kind='level_01',
q_subkind='ax² + b',
expression_number=10 - n))
n -= 1
if random.choice([True, False]):
lil_box.append(default_question(
q_kind='level_01',
q_subkind='ax² + b',
expression_number=10 - n))
n -= 1
if random.choice([True, False]):
lil_box.append(default_question(
q_kind='level_01',
q_subkind='ax² + b',
expression_number=10 - n))
n -= 1
for i in range(n):
lil_box.append(default_question(
q_kind='level_01',
q_subkind='ax + b',
expression_number=n - i))
random.shuffle(lil_box)
for i in range(len(lil_box)):
q = lil_box.pop()
q.expression.name = alphabet[i]
for expression in q.steps:
expression.name = alphabet[i]
self.questions_list.append(q)
elif self.x_subkind == 'level_03_sum_squares':
lil_box = []
for n in range(2):
lil_box.append(default_question(
q_kind='level_03',
q_subkind='sum_square',
expression_number=n + 1))
lil_box.append(default_question(q_kind='level_03',
q_subkind='sum_square_mixed',
expression_number=n + 1))
for i in range(len(lil_box)):
q = lil_box[i]
q.expression.name = alphabet[i]
for expression in q.steps:
if isinstance(expression, Expression):
expression.name = alphabet[i]
self.questions_list.append(q)
elif self.x_subkind == 'level_03_difference_squares':
lil_box = []
for n in range(2):
lil_box.append(default_question(
q_kind='level_03',
q_subkind='difference_square',
expression_number=n + 1))
lil_box.append(default_question(q_kind='level_03',
subkind='difference_square'
'_mixed',
expression_number=n + 1))
for i in range(len(lil_box)):
q = lil_box[i]
q.expression.name = alphabet[i]
for expression in q.steps:
if isinstance(expression, Expression):
expression.name = alphabet[i]
self.questions_list.append(q)
elif self.x_subkind == 'level_03_squares_differences':
lil_box = []
for n in range(2):
lil_box.append(default_question(
q_kind='level_03',
q_subkind='squares_difference',
expression_number=n + 1))
lil_box.append(default_question(
q_kind='level_03',
q_subkind='squares_difference_mixed',
expression_number=n + 1))
for i in range(len(lil_box)):
q = lil_box[i]
q.expression.name = alphabet[i]
for expression in q.steps:
if isinstance(expression, Expression):
expression.name = alphabet[i]
self.questions_list.append(q)
elif self.x_subkind == 'level_03_some_not_factorizable':
q1 = default_question(q_kind='level_03',
q_subkind='any_true_mixed',
expression_number=1)
q2 = default_question(q_kind='level_03',
q_subkind='any_fake_straight',
expression_number=2)
lil_box = [q1, q2]
random.shuffle(lil_box)
for n in range(3):
lil_box.append(default_question(q_kind='level_03',
q_subkind='any_true',
expression_number=n + 3))
for n in range(2):
lil_box.append(default_question(q_kind='level_03',
q_subkind='any_fake',
expression_number=n + 5))
for n in range(2):
lil_box.append(default_question(q_kind='level_03',
q_subkind='any',
expression_number=n + 7))
for i in range(len(lil_box)):
q = lil_box[i]
q.expression.name = alphabet[i]
for expression in q.steps:
if isinstance(expression, Expression):
expression.name = alphabet[i]
self.questions_list.append(q)
# OTHER EXERCISES (BY_PASS OPTION)
else:
for i in range(self.q_nb):
self.questions_list.append(
default_question(expression_number=i + self.start_number,
q_kind=self.x_subkind,
**options))