1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
#!/usr/bin/env python
# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2008 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
# Date: 17/4/2008
# Script to calculate the marks for all students for a particular subject.
# Requires root to run.
import conf
import sys
import os
import common.db
import re
import csv
import time
from xml.dom import minidom
if os.getuid() != 0:
print >>sys.stderr, "Must run marks.py as root."
sys.exit()
if len(sys.argv) <= 1:
print >>sys.stderr, "Usage: python ./marks.py subject"
sys.exit()
# Regex for valid identifiers (subject/worksheet names)
re_ident = re.compile("[0-9A-Za-z_]+")
# This code copy/edited from www/apps/tutorial/__init__.py
def is_valid_subjname(subject):
m = re_ident.match(subject)
return m is not None and m.end() == len(subject)
subject = sys.argv[1]
# Subject names must be valid identifiers
if not is_valid_subjname(subject):
print >>sys.stderr, "Invalid subject name: %s." % repr(subject)
sys.exit()
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
time.strftime("%d/%m/%y", user.last_login))
return [user.studentid, user.login, user.fullname, last_login]
userdata_header = ["Student ID", "Login", "Full name", "Last login"]
def get_assessable_worksheets(subject):
"""
Given a subject name, returns a list of strings - the worksheet names (not
primary key IDs) for all assessable worksheets for that subject.
May raise Exceptions, which are fatal.
"""
# NOTE: This code is copy/edited from
# www/apps/tutorial/__init__.py:handle_subject_menu
# Should be factored out of there.
# Parse the subject description file
# The subject directory must have a file "subject.xml" in it,
# or it does not exist (raise exception).
try:
subjectfile = open(os.path.join(conf.subjects_base, subject,
"subject.xml"))
except:
raise Exception("Subject %s not found." % repr(subject))
assessable_worksheets = []
# Read in data about the subject
subjectdom = minidom.parse(subjectfile)
subjectfile.close()
# TEMP: All of this is for a temporary XML format, which will later
# change.
worksheetsdom = subjectdom.documentElement
worksheets = [] # List of string IDs
for worksheetdom in worksheetsdom.childNodes:
if worksheetdom.nodeType == worksheetdom.ELEMENT_NODE:
# (Note: assessable will default to False, unless it is explicitly
# set to "true").
if worksheetdom.getAttribute("assessable") == "true":
assessable_worksheets.append(worksheetdom.getAttribute("id"))
return assessable_worksheets
def get_marks_header(worksheets):
"""
Given a list of strings - the assessable worksheets - returns a new list
of strings - the column headings for the marks section of the CSV output.
"""
return worksheets + ["Total %", "Mark"]
def get_marks_user(subject, worksheets, user):
"""
Given a subject, a list of strings (the assessable worksheets), and a user
object, 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.
"""
# NOTE: This code is copy/edited from
# www/apps/tutorial/__init__.py:handle_subject_menu
# Should be factored out of there.
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:
try:
# We simply ignore optional exercises here
mand_done, mand_total, _, _ = (
db.calculate_score_worksheet(user.login, subject,
worksheet))
worksheet_pcts.append(float(mand_done) / mand_total)
problems_done += mand_done
problems_total += mand_total
except common.db.DBException:
# Worksheet is probably not in database yet
pass
problems_pct = float(problems_done) / problems_total
problems_pct_int = (100 * problems_done) / problems_total
# XXX Marks calculation (should be abstracted out of here!)
# percent / 16, rounded down, with a maximum mark of 5
max_mark = 5
mark = min(problems_pct_int / 16, max_mark)
return worksheet_pcts + [problems_pct, mark]
def writeuser(subject, worksheets, user, csvfile):
userdata = get_userdata(user)
marksdata = get_marks_user(subject, worksheets, user)
csvfile.writerow(userdata + marksdata)
try:
# Get the list of assessable worksheets from the subject.xml file,
# and the list of all users from the DB.
worksheets = get_assessable_worksheets(subject)
db = common.db.DB()
list = db.get_users()
except Exception, message:
print >>sys.stderr, "Error: " + str(message)
sys.exit(1)
# Start writing the CSV file - header
csvfile = csv.writer(sys.stdout)
csvfile.writerow(userdata_header + get_marks_header(worksheets))
list.sort(key=lambda user: user.login)
for user in list:
writeuser(subject, worksheets, user, csvfile)
|