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#!/usr/bin/env python
# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2009 The University of Melbourne
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Program: Marks
# Author: Matt Giuca
# Script to calculate the marks for all students for a particular subject.
# Requires root to run.
import sys
import os
import csv
import datetime
import optparse
if os.getuid() != 0:
print >>sys.stderr, "Must run %s as root." % os.path.basename(sys.argv[0])
sys.exit()
import ivle.config
import ivle.database
import ivle.worksheet.utils
def get_userdata(user):
"""
Given a User object, returns a list of strings for the user data which
will be part of the output for this user.
(This is not marks, it's other user data).
"""
last_login = (None if user.last_login is None else
user.last_login.strftime("%d/%m/%y"))
return [user.studentid, user.login, user.fullname, last_login]
userdata_header = ["Student ID", "Login", "Full name", "Last login"]
def get_header(worksheets):
"""
Given a list of Worksheet objects (the assessable worksheets), returns a
list of strings -- the column headings for the marks section of the CSV
output.
"""
return (userdata_header + [ws.name for ws in worksheets]
+ ["Total %", "Mark"])
def get_marks_user(worksheets, user, as_of=None):
"""Gets marks for a particular user for a particular set of worksheets.
@param worksheets: List of Worksheet objects to get marks for.
@param user: User to get marks for.
@param as_of: Optional datetime. If supplied, gets the marks as of as_of.
@returns: The user's percentage for each worksheet, overall, and
their final mark, as a list of strings, in a manner which corresponds to
the headings produced by get_marks_header.
"""
worksheet_pcts = []
# As we go, calculate the total score for this subject
# (Assessable worksheets only, mandatory problems only)
problems_done = 0
problems_total = 0
for worksheet in worksheets:
# We simply ignore optional exercises here
mand_done, mand_total, _, _ = (
ivle.worksheet.utils.calculate_score(store, user, worksheet,
as_of))
if mand_total > 0:
worksheet_pcts.append(float(mand_done) / mand_total)
else:
# Avoid Div0, just give everyone 0 marks if there are none
worksheet_pcts.append(0.0)
problems_done += mand_done
problems_total += mand_total
percent, mark, _ = (
ivle.worksheet.utils.calculate_mark(problems_done, problems_total))
return worksheet_pcts + [float(percent)/100, mark]
def writeuser(worksheets, user, csvfile, cutoff=None):
userdata = get_userdata(user)
marksdata = get_marks_user(worksheets, user, cutoff)
data = userdata + marksdata
# CSV writer can't handle non-ASCII characters. Encode to UTF-8.
data = [unicode(x).encode('utf-8') for x in data]
csvfile.writerow(data)
def main(argv=None):
global store
if argv is None:
argv = sys.argv
usage = """usage: %prog [options] subject
(requires root)
Reports each student's marks for a given subject offering."""
# Parse arguments
parser = optparse.OptionParser(usage)
parser.add_option("-s", "--semester",
action="store", dest="semester", metavar="YEAR/SEMESTER",
help="Semester of the subject's offering (eg. 2009/1). "
"Defaults to the currently active semester.",
default=None)
parser.add_option("-c", "--cutoff",
action="store", dest="cutoff", metavar="DATE",
help="Cutoff date (calculate the marks as of this date). "
"YYYY-MM-DD H:M:S.",
default=None)
(options, args) = parser.parse_args(argv[1:])
if len(args) < 1:
parser.print_help()
parser.exit()
subject_name = unicode(args[0])
if options.semester is None:
year, semester = None, None
else:
try:
year, semester = options.semester.split('/')
if len(year) == 0 or len(semester) == 0:
raise ValueError()
except ValueError:
parser.error('Invalid semester (must have form "year/semester")')
if options.cutoff is not None:
try:
cutoff = datetime.datetime.strptime(options.cutoff,
"%Y-%m-%d %H:%M:%S")
except ValueError:
parser.error("Invalid date format: '%s' "
"(must be YYYY-MM-DD H:M:S)." % options.cutoff)
else:
cutoff = None
store = ivle.database.get_store(ivle.config.Config(plugins=False))
# Get the subject from the DB
subject = store.find(ivle.database.Subject,
ivle.database.Subject.short_name == subject_name).one()
if subject is None:
print >>sys.stderr, "No subject with short name '%s'" % subject_name
return 1
# Get the offering from the DB
if semester is None:
# None specified - get the current offering from the DB
offerings = list(subject.active_offerings())
if len(offerings) == 0:
print >>sys.stderr, ("No active offering for subject '%s'"
% subject_name)
return 1
elif len(offerings) > 1:
print >>sys.stderr, ("Multiple active offerings for subject '%s':"
% subject_name)
print >>sys.stderr, "Please use one of:"
for offering in offerings:
print >>sys.stderr, (" --semester=%s/%s"
% (offering.semester.year, offering.semester.semester))
return 1
else:
offering = offerings[0]
else:
# Get the offering for the specified semester
offering = subject.offering_for_semester(year, semester)
if offering is None:
print >>sys.stderr, (
"No offering for subject '%s' in semester %s/%s"
% (subject_name, year, semester))
return 1
# Get the list of assessable worksheets
worksheets = offering.worksheets.find(assessable=True)
# Start writing the CSV file - header
csvfile = csv.writer(sys.stdout)
csvfile.writerow(get_header(worksheets))
# Get all users enrolled in this offering
users = store.find(ivle.database.User,
ivle.database.User.id == ivle.database.Enrolment.user_id,
offering.id == ivle.database.Enrolment.offering).order_by(
ivle.database.User.login)
for user in users:
writeuser(worksheets, user, csvfile, cutoff)
if __name__ == "__main__":
sys.exit(main(sys.argv))
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