def get_other_answers_simple(pool, seeded_answers, get_student_item_dict, num_responses):
"""
Get answers from others with simple algorithm, which picks one answer for each option.
Args:
see `get_other_answers`
num_responses (int): the number of responses to be returned. This value may not be
respected if there is not enough answers to return
Returns:
dict: answers based on the selection algorithm
"""
ret = []
# clean up answers so that all keys are int
pool = {int(k): v for k, v in pool.items()}
total_in_pool = len(seeded_answers)
merged_pool = convert_seeded_answers(seeded_answers)
student_id = get_student_item_dict()['student_id']
# merge the dictionaries in the answer dictionary
for key in pool:
total_in_pool += len(pool[key])
# if student_id has value, we assume the student just submitted an answer. So removing it
# from total number in the pool
if student_id in pool[key].keys():
total_in_pool -= 1
if key in merged_pool:
merged_pool[key].update(pool[key].items())
else:
merged_pool[key] = pool[key]
# remember which option+student_id is selected, so that we don't have duplicates in the result
selected = []
# loop until we have enough answers to return
while len(ret) < min(num_responses, total_in_pool):
for option, students in merged_pool.items():
student = student_id
i = 0
while (student == student_id or i > 100) and (str(option) + student) not in selected:
# retry until we got a different one or after 100 retries
# we are suppose to get a different student answer or a seeded one in a few tries
# as we have at least one seeded answer for each option in the algo. And it is not
# suppose to overflow i order to break the loop
student = random.choice(students.keys())
i += 1
selected.append(str(option)+student)
if student.startswith('seeded'):
# seeded answer, get the rationale from local
rationale = students[student]
else:
student_item = get_student_item_dict(student)
submission = sas_api.get_answers_for_student(student_item)
rationale = submission.get_rationale(0)
ret.append({'option': option, 'rationale': rationale})
# check if we have enough answers
if len(ret) >= min(num_responses, total_in_pool):
break
return {"answers": ret}
def get_other_answers_simple(pool, seeded_answers, get_student_item_dict, num_responses):
"""
Get answers from others with simple algorithm, which picks one answer for each option.
Args:
see `get_other_answers`
num_responses (int): the number of responses to be returned. This value may not be
respected if there is not enough answers to return
Returns:
dict: answers based on the selection algorithm
"""
ret = []
# clean up answers so that all keys are int
pool = {int(k): v for k, v in pool.items()}
total_in_pool = len(seeded_answers)
merged_pool = convert_seeded_answers(seeded_answers)
student_id = get_student_item_dict()['student_id']
# merge the dictionaries in the answer dictionary
for key in pool:
total_in_pool += len(pool[key])
# if student_id has value, we assume the student just submitted an answer. So removing it
# from total number in the pool
if student_id in pool[key].keys():
total_in_pool -= 1
if key in merged_pool:
merged_pool[key].update(pool[key].items())
else:
merged_pool[key] = pool[key]
# remember which option+student_id is selected, so that we don't have duplicates in the result
selected = []
# loop until we have enough answers to return
while len(ret) < min(num_responses, total_in_pool):
for option, students in merged_pool.items():
student = student_id
i = 0
while (student == student_id or i > 100) and (str(option) + student) not in selected:
# retry until we got a different one or after 100 retries
# we are suppose to get a different student answer or a seeded one in a few tries
# as we have at least one seeded answer for each option in the algo. And it is not
# suppose to overflow i order to break the loop
student = random.choice(students.keys())
i += 1
selected.append(str(option)+student)
if student.startswith('seeded'):
# seeded answer, get the rationale from local
rationale = students[student]
else:
student_item = get_student_item_dict(student)
submission = sas_api.get_answers_for_student(student_item)
rationale = submission.get_rationale(0)
ret.append({'option': option, 'rationale': rationale})
# check if we have enough answers
if len(ret) >= min(num_responses, total_in_pool):
break
return {"answers": ret}
def get_other_answers_simple(pool, seeded_answers, get_student_item_dict,
num_responses):
"""
Get answers from others with simple algorithm, which picks one answer for each option.
Args:
see `get_other_answers`
num_responses (int): the number of responses to be returned. This value may not be
respected if there is not enough answers to return
Returns:
dict: answers based on the selection algorithm
"""
ret = []
# clean up answers so that all keys are int
pool = {int(k): v for k, v in pool.items()}
merged_pool = convert_seeded_answers(seeded_answers)
student_id = get_student_item_dict()['student_id']
# merge the dictionaries in the answer dictionary
for key in pool:
merged_pool.setdefault(key, {})
merged_pool[key].update(pool[key])
# Pop student's own answer, if exists
merged_pool[key].pop(student_id, None)
# loop until we have enough answers to return or when there is nothing more to return
while len(ret) < num_responses and merged_pool:
for option, students in merged_pool.items():
rationale = None
while students:
student = random.choice(students.keys())
# remove the chosen answer from pool
content = students.pop(student, None)
if student.startswith('seeded'):
# seeded answer, get the rationale from local
rationale = content
else:
student_item = get_student_item_dict(student)
submission = sas_api.get_answers_for_student(student_item)
# Make sure the answer is still the one we want.
# It may have changed (e.g. instructor deleted the student state
# and the student re-submitted a diff answer)
if submission.has_revision(0) and submission.get_vote(
0) == option:
rationale = submission.get_rationale(0)
if rationale:
ret.append({'option': option, 'rationale': rationale})
break
if not students:
del merged_pool[option]
# check if we have enough answers
if len(ret) >= num_responses:
break
return {"answers": ret}
def get_other_answers_random(pool, seeded_answers, get_student_item_dict,
num_responses):
"""
Get answers from others with random algorithm, which randomly select answer from the pool.
Student may get three answers for option 1 or one answer for option 1 and two answers for option 2.
Args:
see `get_other_answers`
num_responses (int): the number of responses to be returned. This value may not be
respected if there is not enough answers to return
Returns:
dict: answers based on the selection algorithm
"""
ret = []
# clean up answers so that all keys are int
pool = {int(k): v for k, v in pool.items()}
seeded = {
'seeded' + str(index): answer
for index, answer in enumerate(seeded_answers)
}
merged_pool = seeded.keys()
for key in pool:
merged_pool += pool[key].keys()
# shuffle
random.shuffle(merged_pool)
# get student identifier
student_id = get_student_item_dict()['student_id']
for student in merged_pool:
if len(ret) >= num_responses:
# have enough answers
break
elif student == student_id:
# this is the student's answer so don't return
continue
if student.startswith('seeded'):
option = seeded[student]['answer']
rationale = seeded[student]['rationale']
else:
student_item = get_student_item_dict(student)
submission = sas_api.get_answers_for_student(student_item)
if submission.has_revision(0):
rationale = submission.get_rationale(0)
option = submission.get_vote(0)
else:
continue
ret.append({'option': option, 'rationale': rationale})
return {"answers": ret}
def get_other_answers_random(pool, seeded_answers, get_student_item_dict, num_responses):
"""
Get answers from others with random algorithm, which randomly select answer from the pool.
Student may get three answers for option 1 or one answer for option 1 and two answers for option 2.
Args:
see `get_other_answers`
num_responses (int): the number of responses to be returned. This value may not be
respected if there is not enough answers to return
Returns:
dict: answers based on the selection algorithm
"""
ret = []
# clean up answers so that all keys are int
pool = {int(k): v for k, v in pool.items()}
seeded = {'seeded'+str(index): answer for index, answer in enumerate(seeded_answers)}
merged_pool = seeded.keys()
for key in pool:
merged_pool += pool[key].keys()
# shuffle
random.shuffle(merged_pool)
# get student identifier
student_id = get_student_item_dict()['student_id']
for student in merged_pool:
if len(ret) >= num_responses:
# have enough answers
break
elif student == student_id:
# this is the student's answer so don't return
continue
if student.startswith('seeded'):
option = seeded[student]['answer']
rationale = seeded[student]['rationale']
else:
student_item = get_student_item_dict(student)
submission = sas_api.get_answers_for_student(student_item)
rationale = submission.get_rationale(0)
option = submission.get_vote(0)
ret.append({'option': option, 'rationale': rationale})
return {"answers": ret}
def get_answers_for_student(self):
"""
Retrieve answers from backend for current user
"""
return sas_api.get_answers_for_student(self.get_student_item_dict())
def get_answers_for_student(self):
"""
Retrieve answers from backend for current user
"""
return sas_api.get_answers_for_student(self.get_student_item_dict())
def refresh_answers(answers_shown,
option,
pool,
seeded_answers,
get_student_item_dict,
seeded_first=False):
"""
Refresh the answers shown for given option
Args:
answers_shown (dict): answers being shown that need to be refreshed. Format:
{'answers': [
{'option': 0, 'rationale': 'rationale A'},
{'option': 1, 'rationale': 'rationale B'},
]}
option (int): the option to refresh
pool (dict): answer pool, format:
{
option1_index: {
student_id: { can store algorithm specific info here }
},
option2_index: {
student_id: { ... }
}
}
seeded_answers (list): seeded answers from instructor
[
{'answer': 0, 'rationale': 'rationale A'},
{'answer': 1, 'rationale': 'rationale B'},
]
get_student_item_dict (callable): get student item dict function to return student item dict
seeded_first (boolean): refresh with answers from seeded_answers first, when exhausted, pick from pool
Returns:
dict: refreshed answers lists
{
'answers':
[
{'option': 0, 'rationale': 'rationale A'},
{'option': 1, 'rationale': 'rationale B'},
]
}
"""
ret = copy.deepcopy(answers_shown)
# clean up answers so that all keys are int
pool = {int(k): v for k, v in pool.items()}
seeded_pool = convert_seeded_answers(seeded_answers)
student_id = get_student_item_dict()['student_id']
available_students = copy.deepcopy(pool.get(option, {}))
available_students.pop(student_id, None)
# if seed answers have higher priority, fill the available seeds.
# otherwise merge them into available students
available_seeds = {}
if seeded_first and seeded_pool.get(option, {}):
available_seeds = copy.deepcopy(seeded_pool.get(option, {}))
else:
for key in seeded_pool.get(option, {}):
available_students[key] = seeded_pool.get(option,
{}).get(key, None)
for answer in ret.get('answers', []):
if answer.get('option', None) == option:
rationale = None
while available_seeds:
key = random.choice(available_seeds.keys())
rationale = available_seeds.pop(key, None)
if rationale is not None:
answer['rationale'] = rationale
break
while available_students and rationale is None:
key = random.choice(available_students.keys())
# remove the chosen answer from pool
content = available_students.pop(key, None)
if key.startswith('seeded'):
rationale = content
else:
student_item = get_student_item_dict(key)
submission = sas_api.get_answers_for_student(student_item)
# Make sure the answer is still the one we want.
# It may have changed (e.g. instructor deleted the student state
# and the student re-submitted a diff answer)
if submission.has_revision(0) and submission.get_vote(
0) == option:
rationale = submission.get_rationale(0)
if rationale:
answer['rationale'] = rationale
break
# random.shuffle(ret['answers'])
return ret