Remove all references to Python2

Author: wil93

Dockerfile

@@ -17,7 +17,6 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     openjdk-8-jdk-headless \
     php7.4-cli \
     postgresql-client \
-    python2 \
     python3-pip \
     python3.8 \
     python3.8-dev \

cms/conf.py

@@ -167,7 +167,7 @@ def __init__(self):
         # the prefix (or real_prefix to accommodate virtualenvs).
         bin_path = os.path.join(os.getcwd(), sys.argv[0])
         bin_name = os.path.basename(bin_path)
-        bin_is_python = bin_name in ["ipython", "python", "python2", "python3"]
+        bin_is_python = bin_name in ["ipython", "python", "python3"]
         bin_in_installed_path = bin_path.startswith(sys.prefix) or (
             hasattr(sys, 'real_prefix')
             and bin_path.startswith(sys.real_prefix))

cmsranking/Config.py

@@ -61,7 +61,7 @@ def __init__(self):
         # TODO: move to cmscommon as it is used both here and in cms/conf.py
         bin_path = os.path.join(os.getcwd(), sys.argv[0])
         bin_name = os.path.basename(bin_path)
-        bin_is_python = bin_name in ["ipython", "python", "python2", "python3"]
+        bin_is_python = bin_name in ["ipython", "python", "python3"]
         bin_in_installed_path = bin_path.startswith(sys.prefix) or (
             hasattr(sys, 'real_prefix')
             and bin_path.startswith(sys.real_prefix))

docs/Configuring a contest.rst

@@ -225,7 +225,7 @@ Language details
 
 * Pascal support is provided by ``fpc``, and submissions are optimized with ``-O2``.
 
-* Python submissions are executed using the system Python interpreter (you need to have ``/usr/bin/python2`` or ``/usr/bin/python3``, respectively).
+* Python submissions are executed using the system Python interpreter (you need to have ``/usr/bin/python3``).
 
 * PHP submissions are interpreted by ``/usr/bin/php``.
 

docs/Installation.rst

@@ -34,7 +34,7 @@ Then you require the compilation and execution environments for the languages yo
 
 * `Free Pascal <http://www.freepascal.org/>`_ (for Pascal, with executable ``fpc``);
 
-* `Python <http://www.python.org/>`_ >= 2.7 (for Python, with executable ``python2`` or ``python3``; in addition you will need ``zip``);
+* `Python <http://www.python.org/>`_ >= 3.8 (for Python, with executable ``python3``; in addition you will need ``zip``);
 
 * `PHP <http://www.php.net>`_ >= 5 (for PHP, with executable ``php``);
 
@@ -63,7 +63,7 @@ On Ubuntu 20.04, one will need to run the following script to satisfy all depend
         libffi-dev python3-pip
 
     # Optional
-    sudo apt-get install nginx-full python2.7 php7.4-cli php7.4-fpm \
+    sudo apt-get install nginx-full python3.8 php7.4-cli php7.4-fpm \
         phppgadmin texlive-latex-base a2ps haskell-platform rustc mono-mcs
 
 The above commands provide a very essential Pascal environment. Consider installing the following packages for additional units: `fp-units-base`, `fp-units-fcl`, `fp-units-misc`, `fp-units-math` and `fp-units-rtl`.
@@ -86,7 +86,7 @@ On Arch Linux, unofficial AUR packages can be found: `cms <http://aur.archlinux.
     sudo pacman -S --needed postgresql-libs libcups libyaml python-pip
 
     # Optional
-    sudo pacman -S --needed nginx python2 php php-fpm phppgadmin texlive-core \
+    sudo pacman -S --needed nginx python3 php php-fpm phppgadmin texlive-core \
         a2ps ghc rust mono
 
 Preparation steps