Refactoring grades. Adding more generic grading classes. Probably broken right now. Just committing to save progress.
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Bridger Maxwell
@@ -16,7 +16,113 @@ Score = namedtuple("Score", "earned possible graded section")
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SectionPercentage = namedtuple("SectionPercentage", "percentage label summary")
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def get_grade(user, problem, cache):
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class CourseGrader:
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def grade(self, grade_sheet):
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raise NotImplementedError
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class FormatWithDropsGrader(CourseGrader):
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"""
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Grades all sections specified in course_format with an equal weight. A specified
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number of lowest scores can be dropped from the calculation. The minimum number of
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sections in this format must be specified (even if those sections haven't been
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written yet).
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section_detail_formatter is a format string with the parameters (index, name, percent, earned, possible).
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ex: "Homework {index} - {name} - {percent:.0%} ({earned:g}/{possible:g})"
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section_missing_detail_formatter is a format string with the parameters (index) for
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when the minimum number of sections weren't found in the course.
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ex: "Unreleased Homework {index} - 0% (?/?)"
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section_label_formatter is a format string for a short label with the parameters (index).
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These look best when fixed-length.
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ex: "HW {index:02d}"
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total_detail_formatter is a format string for displaying the average score with the
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parameters (percent).
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ex: "Homework Average = {percent:.0%}"
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total_label_formatter is a string (with no parameters).
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ex: "HW Avg"
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"""
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def __init__(self, course_format, min_number, drop_count, category, section_detail_formatter, section_missing_detail_formatter,
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section_label_formatter, total_detail_formatter, total_label_formatter):
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self.course_format = course_format
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self.min_number = min_number
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self.drop_count = drop_count
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self.category = category
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self.section_detail_formatter = section_detail_formatter
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self.section_missing_detail_formatter = section_missing_detail_formatter
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self.section_label_formatter = section_label_formatter
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self.total_detail_formatter = total_detail_formatter
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self.total_label_formatter = total_label_formatter
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def grade(self, grade_sheet):
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def totalWithDrops(breakdown, drop_count):
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#create an array of tuples with (index, mark), sorted by mark['percentage'] descending
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sorted_breakdown = sorted( enumerate(breakdown), key=lambda x: -x[1]['percentage'] )
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# A list of the indices of the dropped scores
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dropped_indices = [x[0] for x in sorted_breakdown[-drop_count:]]
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aggregate_score = 0
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for index, mark in enumerate(breakdown):
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if index not in dropped_indices:
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aggregate_score += mark['percentage']
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aggregate_score /= len(scores) - drop_count
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return aggregate_score, dropped_indices
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#Figure the homework scores
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scores = grade_sheet.get(self.course_format, [])
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breakdown = []
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for i in range(12):
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if i < len(scores):
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percentage = scores[i].earned / float(scores[i].possible)
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summary = self.section_detail_formatter.format(index: i+1,
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name: scores[i].section,
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percentage: percentage,
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earned: scores[i].earned,
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possible: scores[i].possible )
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else:
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percentage = 0
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summary = self.section_missing_detail_formatter.format(index: i+1)
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if settings.GENERATE_PROFILE_SCORES:
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points_possible = random.randrange(10, 50)
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points_earned = random.randrange(5, points_possible)
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percentage = points_earned / float(points_possible)
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summary = self.section_detail_formatter.format(index: i+1,
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name: "Randomly Generated",
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percentage: percentage,
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earned: points_earned,
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possible: points_possible )
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label = self.section_label_formatter.format(index: i+1)
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breakdown.append( {'percent': percentage, 'label': label, 'detail': summary, category: self.category} )
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total_percent, dropped_indices = totalWithDrops(breakdown, self.drop_count)
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for dropped_index in dropped_indicies:
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breakdown[dropped_index]['mark'] = {'detail': "The lowest {0} scores are dropped.".format(self.drop_count) }
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total_detail = self.total_detail_formatter.format(percent: total_percent)
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breakdown.append( {'percent': total_percent, 'label': self.total_label_formatter, 'detail': total_detail, category: self.category, prominent: True} )
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return {'percent' : total_percent,
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'section_breakdown' : breakdown,
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#No grade_breakdown here
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}
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def get_score(user, problem, cache):
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## HACK: assumes max score is fixed per problem
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id = problem.get('id')
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correct = 0
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@@ -87,7 +193,7 @@ def grade_sheet(student):
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scores=[]
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if len(problems)>0:
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for p in problems:
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(correct,total) = get_grade(student, p, response_by_id)
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(correct,total) = get_score(student, p, response_by_id)
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# id = p.get('id')
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# correct = 0
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# if id in response_by_id:
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@@ -124,7 +230,7 @@ def grade_sheet(student):
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format_scores.append( graded_total )
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totaled_scores[ format ] = format_scores
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score={'section':s.get("name"),
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section_score={'section':s.get("name"),
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'scores':scores,
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'section_total' : section_total,
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'format' : format,
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@@ -132,7 +238,7 @@ def grade_sheet(student):
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'due' : s.get("due") or "",
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'graded' : graded,
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}
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sections.append(score)
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sections.append(section_score)
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chapters.append({'course':course,
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'chapter' : c.get("name"),
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