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Added single section grader. Midterm and Final are now graded.

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Bridger Maxwell
2012-04-08 00:38:00 -04:00
parent 779c247512
commit c1e6dd8005
1 changed files with 53 additions and 5 deletions
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58
djangoapps/courseware/grades.py
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@@ -19,13 +19,56 @@ SectionPercentage = namedtuple("SectionPercentage", "percentage label summary")
class CourseGrader:
def grade(self, grade_sheet):
raise NotImplementedError
class SingleSectionGrader(CourseGrader):
"""
This grades a single section with the format section_format and the name section_name.
"""
def __init__(self, section_format, section_name, label = None, category = None):
self.section_format = section_format
self.section_name = section_name
self.label = label or section_name
self.category = category or section_name
def grade(self, grade_sheet):
foundScore = None
if self.section_format in grade_sheet:
for score in grade_sheet[self.section_format]:
if score.section == self.section_name:
foundScore = score
break
if foundScore:
percent = foundScore.earned / float(foundScore.possible)
detail = "{name} - {percent:.0%} ({earned:g}/{possible:g})".format( name = self.section_name,
percent = percent,
earned = foundScore.earned,
possible = foundScore.possible)
else:
percent = 0.0
detail = "{name} - 0% (?/?)".format(name = self.section_name)
breakdown = [{'percent': percent, 'label': self.label, 'detail': detail, 'category': self.category, 'prominent': True}]
return {'percent' : percent,
'section_breakdown' : breakdown,
#No grade_breakdown here
}
class FormatWithDropsGrader(CourseGrader):
class AssignmentFormatGrader(CourseGrader):
"""
Grades all sections specified in course_format with an equal weight. A specified
number of lowest scores can be dropped from the calculation. The minimum number of
sections in this format must be specified (even if those sections haven't been
written yet).
written yet).
category should be presentable to the user, but may not appear. When the grade breakdown is
displayed, scores from the same category will be similar (for example, by color).
section_detail_formatter is a format string with the parameters (index, name, percent, earned, possible).
ex: "Homework {index} - {name} - {percent:.0%} ({earned:g}/{possible:g})"
@@ -273,13 +316,18 @@ def grade_sheet(student):
'sections' : sections,})
hwGrader = FormatWithDropsGrader("Homework", 12, 2, "Homework", "Homework {index} - {name} - {percent:.0%} ({earned:g}/{possible:g})",
hwGrader = AssignmentFormatGrader("Homework", 12, 2, "Homework", "Homework {index} - {name} - {percent:.0%} ({earned:g}/{possible:g})",
"Unreleased Homework {index} - 0% (?/?)", "HW {index:02d}", "Homework Average = {percent:.0%}", "HW Avg")
labGrader = FormatWithDropsGrader("Lab", 12, 2, "Labs", "Lab {index} - {name} - {percent:.0%} ({earned:g}/{possible:g})",
labGrader = AssignmentFormatGrader("Lab", 12, 2, "Labs", "Lab {index} - {name} - {percent:.0%} ({earned:g}/{possible:g})",
"Unreleased Lab {index} - 0% (?/?)", "Lab {index:02d}", "Lab Average = {percent:.0%}", "Lab Avg")
midtermGrader = SingleSectionGrader("Examination", "Midterm Exam", "Midterm")
grader = WeightedSubsectionsGrader( [(hwGrader, "Homework", 0.15), (labGrader, "Labs", 0.15)] )
finalGrader = SingleSectionGrader("Examination", "Final Exam", "Final")
grader = WeightedSubsectionsGrader( [(hwGrader, hwGrader.category, 0.15), (labGrader, labGrader.category, 0.15),
(midtermGrader, midtermGrader.category, 0.30), (finalGrader, finalGrader.category, 0.40)] )
grade_summary = grader.grade(totaled_scores)