Compatibility with Python 3.12.

Inspired by ioi-2024@0f044fd

cms/io/web_service.py

@@ -21,6 +21,13 @@
 
 import logging
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.wsgi as tornado_wsgi
 except ImportError:

cms/server/admin/handlers/base.py

@@ -34,6 +34,13 @@
 from datetime import datetime, timedelta
 from functools import wraps
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/admin/handlers/contestannouncement.py

@@ -26,6 +26,13 @@
 
 """
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/admin/handlers/contestquestion.py

@@ -27,6 +27,13 @@
 
 import logging
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/admin/handlers/contestuser.py

@@ -31,6 +31,13 @@
 
 import logging
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/admin/handlers/dataset.py

@@ -32,6 +32,13 @@
 import re
 import zipfile
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/admin/handlers/task.py

@@ -29,6 +29,13 @@
 import logging
 import traceback
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/base.py

@@ -32,6 +32,13 @@
 import logging
 import traceback
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/communication.py

@@ -29,6 +29,13 @@
 
 import logging
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/contest.py

@@ -32,6 +32,13 @@
 import ipaddress
 import logging
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/main.py

@@ -34,6 +34,13 @@
 import os.path
 import re
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/task.py

@@ -30,6 +30,13 @@
 
 import logging
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/tasksubmission.py

@@ -32,6 +32,13 @@
 import logging
 import re
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/contest/handlers/taskusertest.py

@@ -31,6 +31,13 @@
 import logging
 import re
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     import tornado4.web as tornado_web
 except ImportError:

cms/server/util.py

@@ -30,6 +30,13 @@
 from functools import wraps
 from urllib.parse import quote, urlencode
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     from tornado4.web import RequestHandler
 except ImportError:

cmstestsuite/unit_tests/grading/ParameterTypesTest.py

@@ -20,6 +20,13 @@
 
 import unittest
 
+import collections
+try:
+    collections.MutableMapping
+except:
+    # Monkey-patch: Tornado 4.5.3 does not work on Python 3.11 by default
+    collections.MutableMapping = collections.abc.MutableMapping
+
 try:
     from tornado4.web import MissingArgumentError
 except ImportError:

requirements.txt

@@ -1,18 +1,23 @@
-# We are currently targeting the versions shipped in Ubuntu 20.04.
-
-tornado>=4.5,<4.6  # http://www.tornadoweb.org/en/stable/releases.html
-psycopg2>=2.8,<2.9  # http://initd.org/psycopg/articles/tag/release/
+# Fix tornado version to be sure that it will work with our patch
+tornado==4.5.3  # http://www.tornadoweb.org/en/stable/releases.html
+# Set psycopg2 version for Python 3.11
+psycopg2==2.9.7  # http://initd.org/psycopg/articles/tag/release/
 sqlalchemy>=1.3,<1.4  # http://docs.sqlalchemy.org/en/latest/changelog/index.html
 netifaces>=0.10,<0.11  # https://bitbucket.org/al45tair/netifaces/src/
-pycryptodomex>=3.14,<3.15  # https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst
+pycryptodomex==3.19.0  # https://github.com/Legrandin/pycryptodome/blob/master/Changelog.rst
 psutil>=5.5,<5.6  # https://github.com/giampaolo/psutil/blob/master/HISTORY.rst
-requests>=2.22,<2.23  # https://pypi.python.org/pypi/requests
-gevent>=21.12.0,<21.13  # http://www.gevent.org/changelog.html
-werkzeug>=0.16,<0.17  # https://github.com/pallets/werkzeug/blob/master/CHANGES
+requests==2.32.3  # https://pypi.python.org/pypi/requests
+# Slightly higher version for Python 3.11 support
+gevent==23.9.0.post1  # http://www.gevent.org/changelog.html
+werkzeug<1.0
+backports.ssl-match-hostname==3.7.0.1
+# Limit greenlet version for compatibility with gevent
+greenlet>=3.0rc1
 patool>=1.12,<1.13  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
 bcrypt>=3.1,<3.2  # https://github.com/pyca/bcrypt/
 chardet>=3.0,<3.1  # https://pypi.python.org/pypi/chardet
-babel>=2.7,<2.8  # http://babel.pocoo.org/en/latest/changelog.html
+# Set babel version for Python 3.11
+babel==2.12.1  # http://babel.pocoo.org/en/latest/changelog.html
 pyxdg>=0.26,<0.27  # https://freedesktop.org/wiki/Software/pyxdg/
 Jinja2>=3.0,<3.1  # http://jinja.pocoo.org/docs/latest/changelog/
 pyjson5>=1.6,<1.7