def test_template(template):
"""Tests if the creation of a template ends up with a valid template. Returns 1/0 for success/failure."""
got_trough_test = 0 # 1 if template got through test, and 0 if not.
# Make numbers, check condition, check calculations
random_domain = template.random_domain
# Efficiency note: it might be faster to pass the domain list, instead of getting them from template every time.
answer = template.answer
question = template.question_text
solution = template.solution
conditions = template.conditions
conditions = remove_unnecessary(conditions)
variable_dict = generate_valid_numbers(question, random_domain, "", False)
inserted_conditions = string_replace(conditions, variable_dict)
if len(conditions) > 1:
conditions_pass = sympify(latex_to_sympy(inserted_conditions))
else:
conditions_pass = True
if conditions_pass:
answer = string_replace(answer, variable_dict)
solution = string_replace(solution, variable_dict)
try:
answer = parse_answer(answer, random_domain)
parse_solution(solution, random_domain) # Checks if solution can be parsed
got_trough_test = 1
except Exception:
pass
if answer == 'error':
got_trough_test = 0
return got_trough_test
def cheat_check(user_answer, disallowed, variables):
"""Checks whether the user has used symbols/functions that are not allowed"""
standard_disallowed = ['int', 'test', "'", '@', '?']
for x in disallowed:
replaced_x = replace_variables_from_array(variables, x)
standard_disallowed.append(parse_solution(replaced_x, ''))
for s in standard_disallowed:
if str(s).replace(' ', '') in str(user_answer):
return True
return False
def required_check(user_answer, required, variables):
"""Checks if the user answer meets the requirements set by the teacher"""
return_value = False
for x in range(0, len(required)):
required[x] = replace_variables_from_array(variables, required[x])
for s in required:
try:
t_s = parse_solution(s, '')
t_s = parenthesis_removal(t_s)
if str(t_s).replace(' ', '') in str(user_answer):
break
#elif parse_using_sympy(latex_to_sympy(t_s) + '+0' + '==' + latex_to_sympy(user_answer) + '+0'):
# break
return_value = True
except Exception as e:
print('in exception ')
print(e)
if str(s) not in str(user_answer):
return_value = True
break
return return_value
def make_answer_context_dict(form_values):
"""Returns context dict for use on the answer page"""
user_answer = form_values['user_answer']
user_answer = user_answer.replace(',','.')
user_answer = user_answer.replace('..', ',') # A cheeky way to circumvent removal of ','
template_type = form_values['template_type']
template_specific = form_values['template_specific']
q = Template.objects.get(pk=form_values['primary_key'])
variable_dictionary = form_values['variable_dictionary'].split('§')
replacing_words = form_values['replacing_words']
random_domain = q.random_domain
if template_type != 'blanks':
answer = q.answer.replace('\\\\', '\\')
answer = answer.replace('(', '+parenthesisleft+') # Done to preserve original parenthesis
answer = answer.replace(')', '+parenthesisright+') # Done to preserve original parenthesis
answer = replace_variables_from_array(variable_dictionary, answer)
#answer = add_phantom_minus(answer)
else:
#answer = get_values_from_position(template_specific, q.solution.replace('\\\\', '\\'))
answer = get_fillin_answers(q.fill_in.replace('\\\\', '\\'))
answer = answer.replace('(', '+parenthesisleft+') # Done to preserve original parenthesis
answer = answer.replace(')', '+parenthesisright+') # Done to preserve original parenthesis
answer = replace_variables_from_array(variable_dictionary, answer)
original_user_answer = user_answer.replace('§', '\\text{ og }')
#answer = remove_pm_and_add_parenthesis(answer) # Replace with new parenthesis parsing
answer = parse_answer(answer, random_domain)
answer = parenthesis_removal(answer)
answer = answer.replace('`', '')
answer = answer.split('§')
solution = str(q.question_text.replace('\\\\', '\\')) + "§" + str(q.solution.replace('\\\\', '\\'))
#solution = add_phantom_minus(solution)
solution = solution.replace('(', '+parenthesisleft+') # Done to preserve original parenthesis
solution = solution.replace(')', '+parenthesisright+') # Done to preserve original parenthesis
solution = replace_variables_from_array(variable_dictionary, solution)
#solution = remove_pm_and_add_parenthesis(solution)
solution = parse_solution(solution, random_domain)
solution = parenthesis_removal(solution)
if len(replacing_words) > 0:
solution = replace_words(solution, replacing_words)['sentence']
user_answer = user_answer.split('§') # If a string doesn't contain the character it returns a list with 1 element
# We format both the user answer and the answer the same way.
user_answer = [after_equal_sign(x) for x in user_answer] # Only get the values after last equal sign.
#user_answer = calculate_array(user_answer, random_domain)
answer = [after_equal_sign(x) for x in answer]
#answer = calculate_array(answer, random_domain)
answer_text = "\\text{Du har svart }" + original_user_answer + \
"\\text{. Det er feil. Svaret er: }" + '\\text{ og }'.join(answer)
correct_answer = check_answer(user_answer, answer, template_type, q.margin_of_error) # Check if the user answered correctly.
if correct_answer:
answer_text = "\\text{Du har svart riktig!}"
answer_text = latex_exceptions(answer_text)
graph = q.graph
if graph:
graph = json.loads(graph)
for x in range(0, len(graph)):
graph[x] = replace_variables_from_array(variable_dictionary, graph[x])
graph[x] = parse_solution(graph[x], q.random_domain)
if graph != None and graph != '': # to prevent error if none
graph = json.dumps(graph)
context_dict = {'title': "Oppgavegen", 'answer': str(answer_text),
'solution': solution, 'user_won': correct_answer, 'graph': graph,
'graph_color' : q.graph_color, 'graph_settings': q.graph_settings}
return context_dict
def generate_task(user, template_extra, desired_type=''):
""" Generates a valid math problem at the correct rating from a template in the database.
:param user: The user requesting a template
:param template_extra: (optional) A id used for requesting a specific template.
:param desired_type: (optional) A string for requesting a specific template type.
:return: Returns a complete math question with generated numbers. """
if template_extra == "":
get_question_dict = get_question(user, '') # Gets a question from the DB
else:
get_question_dict = get_question(user, template_extra)
q = get_question_dict['template']
if desired_type == '':
desired_type = get_question_dict['type']
if desired_type != 'normal':
if (desired_type == 'multiple' or desired_type == 'multifill') and not q.multiple_support:
return {'question': 'error'}
if desired_type == 'blanks' and not q.fill_in:
return {'question': 'error'}
# The domain of random numbers that can be generated for the question
random_domain_list = q.random_domain
task = str(q.question_text)
task = task.replace('\\\\', '\\') # Replaces double \\ with \
task = task.replace('(', '+parenthesisleft+') # Done to preserve original parenthesis
task = task.replace(')', '+parenthesisright+') # Done to preserve original parenthesis
template_type = desired_type
choices = q.choices.replace('\\\\', '\\')
choices = choices.replace('(', '+parenthesisleft+') # Done to preserve original parenthesis
choices = choices.replace(')', '+parenthesisright+') # Done to preserve original parenthesis
conditions = q.conditions.replace('\\\\', '\\')
dictionary = q.dictionary
answer = q.answer.replace('\\\\', '\\')
primary_key = q.pk
fill_in = q.fill_in.replace('\\\\', '\\')
fill_in = fill_in.replace('(', '+parenthesisleft+') # Done to preserve original parenthesis
fill_in = fill_in.replace(')', '+parenthesisright+') # Done to preserve original parenthesis
template_specific = "" # A variable that holds the extra values for a given type. ie. choices for multiple.
variables_used = "" # Sends a splitable string since dictionaries can't be passed between layers.
replacing_words = '' # The words that got replaced, and the words that replaced them
graph = q.graph # took out .replace('\\\\', '\\')
if graph:
graph = json.loads(graph)
#task = add_phantom_minus(task)
#answer = add_phantom_minus(answer)
#choices = add_phantom_minus(choices)
new_choices = ''
new_task = ''
new_answer = ''
variable_dict = ''
valid_solution = False
while valid_solution is False: # Loop until we get a form of the task that has a valid solution
variable_dict = generate_valid_numbers(task, random_domain_list, conditions, False)
variables_used = dict_to_string(variable_dict) # Get a string with the variables used
new_task = string_replace(task, variable_dict)
new_answer = string_replace(answer, variable_dict)
new_choices = string_replace(choices, variable_dict)
for x in range(0, len(graph)):
graph[x] = string_replace(graph[x], variable_dict)
graph[x] = parse_solution(graph[x], q.random_domain)
if new_answer == 'error':
continue # Retry if the current template resulted in a error.
valid_solution = True
if template_type.lower() == 'multiple':
new_choices = new_choices.split('§')
for x in range(len(new_choices)):
new_choices[x] = parse_solution(new_choices[x], q.random_domain)
new_choices.append(parse_solution(new_answer, q.random_domain).replace('§', 'og'))
shuffle(new_choices) # Shuffles the choices so that the answer is not always in the same place.
new_choices = '§'.join(new_choices)
new_choices = parenthesis_removal(new_choices)
template_specific = new_choices
#template_specific = remove_pm_and_add_parenthesis(template_specific)
elif template_type == 'blanks':
fill_in_dict = fill_in_the_blanks(fill_in)
# new_task = new_task + '\n' + fill_in_dict['fill_in'].replace('\\n', '\n')
new_task = new_task + '§' + fill_in_dict['fill_in']
new_task = replace_variables_from_array(variables_used.split('§'), new_task)
new_task = parse_solution(new_task, q.random_domain)
template_specific = fill_in_dict['hole_positions']
elif template_type == 'multifill':
new_choices = choices + '§' + answer.replace('§', 'og')
new_choices = parenthesis_removal(new_choices)
template_specific = multifill(new_choices, variable_dict)
if dictionary is not None:
replace_words_dict = replace_words(new_task, dictionary)
new_task = replace_words_dict['sentence']
replacing_words = replace_words_dict['replace_string']
number_of_answers = len(new_answer.split('§'))
if graph != None and graph != '': # to prevent error if none
graph = json.dumps(graph)
new_task = parse_solution(new_task, q.random_domain)
#new_task = remove_pm_and_add_parenthesis(new_task)
new_task = parenthesis_removal(new_task)
return_dict = {'question': new_task,
'variable_dictionary': variables_used, 'template_type': template_type,
'template_specific': template_specific, 'primary_key': primary_key,
'number_of_answers': number_of_answers, 'replacing_words': replacing_words,
'graph': graph, 'graph_settings': q.graph_settings, 'graph_color': q.graph_color}
return return_dict