感谢@huzuli 提供了Python语言的支持，但是目前还是测试阶段，没有沙箱，无法提供安全防护，所以请勿用于公开场合。

第二版重构的时候将增加集中化的配置，而不是像现在分散在各处。

judge/client.py

@@ -40,7 +40,7 @@ class JudgeClient(object):
         # 如果实际使用超过了3倍, 就只能得到Runtime Error的结果了
         # 而最后会比较Java实际使用的内存和1.5倍的设定内存的大小
         self._real_max_memory = max_memory
-        if self._language["name"] == "java":
+        if self._language["name"] == "java" or self._language["name"] == "python":
             self._max_memory = judger.MEMORY_UNLIMITED
             self.execute_command = self._language["execute_command"].\
                 format(exe_path=self._exe_path, max_memory=max_memory * 3).split(" ")

judge/language.py

@@ -36,6 +36,16 @@ languages = {
                            "-XX:PermSize=8M -Xms16M -Xmx{max_memory} -Djava.security.manager "
                            "-Djava.security.policy==policy -Djava.awt.headless=true Main",
         "use_sandbox": False
+    },
+    4: {
+        "name": "python",
+        "src_name": "main.py",
+        "code": 4,
+        "compile_max_cpu_time": 3000,
+        "compile_max_memory": 1024 * 1024 * 1024,
+        "compile_command": "/usr/bin/python -m py_compile {src_path}",
+        "execute_command": "/usr/bin/python {exe_path}/main.pyc",
+        "use_sandbox": False
     }
 }
 

static/src/js/app/oj/problem/problem.js

@@ -37,7 +37,7 @@ require(["jquery", "codeMirror", "csrfToken", "bsAlert", "ZeroClipboard"],
         var userId;
 
         function setLanguage(language){
-            var languageTypes = {"1": "text/x-csrc", "2": "text/x-c++src", "3": "text/x-java"};
+            var languageTypes = {"1": "text/x-csrc", "2": "text/x-c++src", "3": "text/x-java","4": "text/x-python"};
             codeEditor.setOption("mode", languageTypes[language]);
         }
 
@@ -144,6 +144,10 @@ require(["jquery", "codeMirror", "csrfToken", "bsAlert", "ZeroClipboard"],
             if (code.indexOf("public class Main") > -1||code.indexOf("System.out.print") > -1) {
                 return "3";
             }
+            //python
+            if (code.indexOf("input") > -1 && code.indexOf("print") > -1) {
+                return "4";
+            }
         }
 
         function getServerTime(){

static/src/js/build.js

@@ -40,6 +40,7 @@
         //code mirror 代码编辑器 ->codeMirror
         _codeMirror: "lib/codeMirror/codemirror",
         codeMirrorClang: "lib/codeMirror/language/clike",
+        codeMirrorPython: "lib/codeMirror/language/python",
 
         // bootstrap组件
         modal: "lib/bootstrap/modal",

static/src/js/config.js

@@ -42,6 +42,7 @@ var require = {
         //code mirror 代码编辑器 ->codeMirror
         _codeMirror: "lib/codeMirror/codemirror",
         codeMirrorClang: "lib/codeMirror/language/clike",
+        codeMirrorPython: "lib/codeMirror/language/python",
 
         // bootstrap组件
         modal: "lib/bootstrap/modal",

static/src/js/lib/codeMirror/language/python.js

@@ -0,0 +1,340 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["_codeMirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  function wordRegexp(words) {
+    return new RegExp("^((" + words.join(")|(") + "))\\b");
+  }
+
+  var wordOperators = wordRegexp(["and", "or", "not", "is"]);
+  var commonKeywords = ["as", "assert", "break", "class", "continue",
+                        "def", "del", "elif", "else", "except", "finally",
+                        "for", "from", "global", "if", "import",
+                        "lambda", "pass", "raise", "return",
+                        "try", "while", "with", "yield", "in"];
+  var commonBuiltins = ["abs", "all", "any", "bin", "bool", "bytearray", "callable", "chr",
+                        "classmethod", "compile", "complex", "delattr", "dict", "dir", "divmod",
+                        "enumerate", "eval", "filter", "float", "format", "frozenset",
+                        "getattr", "globals", "hasattr", "hash", "help", "hex", "id",
+                        "input", "int", "isinstance", "issubclass", "iter", "len",
+                        "list", "locals", "map", "max", "memoryview", "min", "next",
+                        "object", "oct", "open", "ord", "pow", "property", "range",
+                        "repr", "reversed", "round", "set", "setattr", "slice",
+                        "sorted", "staticmethod", "str", "sum", "super", "tuple",
+                        "type", "vars", "zip", "__import__", "NotImplemented",
+                        "Ellipsis", "__debug__"];
+  CodeMirror.registerHelper("hintWords", "python", commonKeywords.concat(commonBuiltins));
+
+  function top(state) {
+    return state.scopes[state.scopes.length - 1];
+  }
+
+  CodeMirror.defineMode("python", function(conf, parserConf) {
+    var ERRORCLASS = "error";
+
+    var singleDelimiters = parserConf.singleDelimiters || /^[\(\)\[\]\{\}@,:`=;\.]/;
+    var doubleOperators = parserConf.doubleOperators || /^([!<>]==|<>|<<|>>|\/\/|\*\*)/;
+    var doubleDelimiters = parserConf.doubleDelimiters || /^(\+=|\-=|\*=|%=|\/=|&=|\|=|\^=)/;
+    var tripleDelimiters = parserConf.tripleDelimiters || /^(\/\/=|>>=|<<=|\*\*=)/;
+
+    var hangingIndent = parserConf.hangingIndent || conf.indentUnit;
+
+    var myKeywords = commonKeywords, myBuiltins = commonBuiltins;
+    if (parserConf.extra_keywords != undefined)
+      myKeywords = myKeywords.concat(parserConf.extra_keywords);
+
+    if (parserConf.extra_builtins != undefined)
+      myBuiltins = myBuiltins.concat(parserConf.extra_builtins);
+
+    var py3 = parserConf.version && parseInt(parserConf.version, 10) == 3
+    if (py3) {
+      // since http://legacy.python.org/dev/peps/pep-0465/ @ is also an operator
+      var singleOperators = parserConf.singleOperators || /^[\+\-\*\/%&|\^~<>!@]/;
+      var identifiers = parserConf.identifiers|| /^[_A-Za-z\u00A1-\uFFFF][_A-Za-z0-9\u00A1-\uFFFF]*/;
+      myKeywords = myKeywords.concat(["nonlocal", "False", "True", "None", "async", "await"]);
+      myBuiltins = myBuiltins.concat(["ascii", "bytes", "exec", "print"]);
+      var stringPrefixes = new RegExp("^(([rbuf]|(br))?('{3}|\"{3}|['\"]))", "i");
+    } else {
+      var singleOperators = parserConf.singleOperators || /^[\+\-\*\/%&|\^~<>!]/;
+      var identifiers = parserConf.identifiers|| /^[_A-Za-z][_A-Za-z0-9]*/;
+      myKeywords = myKeywords.concat(["exec", "print"]);
+      myBuiltins = myBuiltins.concat(["apply", "basestring", "buffer", "cmp", "coerce", "execfile",
+                                      "file", "intern", "long", "raw_input", "reduce", "reload",
+                                      "unichr", "unicode", "xrange", "False", "True", "None"]);
+      var stringPrefixes = new RegExp("^(([rub]|(ur)|(br))?('{3}|\"{3}|['\"]))", "i");
+    }
+    var keywords = wordRegexp(myKeywords);
+    var builtins = wordRegexp(myBuiltins);
+
+    // tokenizers
+    function tokenBase(stream, state) {
+      if (stream.sol()) state.indent = stream.indentation()
+      // Handle scope changes
+      if (stream.sol() && top(state).type == "py") {
+        var scopeOffset = top(state).offset;
+        if (stream.eatSpace()) {
+          var lineOffset = stream.indentation();
+          if (lineOffset > scopeOffset)
+            pushPyScope(state);
+          else if (lineOffset < scopeOffset && dedent(stream, state))
+            state.errorToken = true;
+          return null;
+        } else {
+          var style = tokenBaseInner(stream, state);
+          if (scopeOffset > 0 && dedent(stream, state))
+            style += " " + ERRORCLASS;
+          return style;
+        }
+      }
+      return tokenBaseInner(stream, state);
+    }
+
+    function tokenBaseInner(stream, state) {
+      if (stream.eatSpace()) return null;
+
+      var ch = stream.peek();
+
+      // Handle Comments
+      if (ch == "#") {
+        stream.skipToEnd();
+        return "comment";
+      }
+
+      // Handle Number Literals
+      if (stream.match(/^[0-9\.]/, false)) {
+        var floatLiteral = false;
+        // Floats
+        if (stream.match(/^\d*\.\d+(e[\+\-]?\d+)?/i)) { floatLiteral = true; }
+        if (stream.match(/^\d+\.\d*/)) { floatLiteral = true; }
+        if (stream.match(/^\.\d+/)) { floatLiteral = true; }
+        if (floatLiteral) {
+          // Float literals may be "imaginary"
+          stream.eat(/J/i);
+          return "number";
+        }
+        // Integers
+        var intLiteral = false;
+        // Hex
+        if (stream.match(/^0x[0-9a-f]+/i)) intLiteral = true;
+        // Binary
+        if (stream.match(/^0b[01]+/i)) intLiteral = true;
+        // Octal
+        if (stream.match(/^0o[0-7]+/i)) intLiteral = true;
+        // Decimal
+        if (stream.match(/^[1-9]\d*(e[\+\-]?\d+)?/)) {
+          // Decimal literals may be "imaginary"
+          stream.eat(/J/i);
+          // TODO - Can you have imaginary longs?
+          intLiteral = true;
+        }
+        // Zero by itself with no other piece of number.
+        if (stream.match(/^0(?![\dx])/i)) intLiteral = true;
+        if (intLiteral) {
+          // Integer literals may be "long"
+          stream.eat(/L/i);
+          return "number";
+        }
+      }
+
+      // Handle Strings
+      if (stream.match(stringPrefixes)) {
+        state.tokenize = tokenStringFactory(stream.current());
+        return state.tokenize(stream, state);
+      }
+
+      // Handle operators and Delimiters
+      if (stream.match(tripleDelimiters) || stream.match(doubleDelimiters))
+        return "punctuation";
+
+      if (stream.match(doubleOperators) || stream.match(singleOperators))
+        return "operator";
+
+      if (stream.match(singleDelimiters))
+        return "punctuation";
+
+      if (state.lastToken == "." && stream.match(identifiers))
+        return "property";
+
+      if (stream.match(keywords) || stream.match(wordOperators))
+        return "keyword";
+
+      if (stream.match(builtins))
+        return "builtin";
+
+      if (stream.match(/^(self|cls)\b/))
+        return "variable-2";
+
+      if (stream.match(identifiers)) {
+        if (state.lastToken == "def" || state.lastToken == "class")
+          return "def";
+        return "variable";
+      }
+
+      // Handle non-detected items
+      stream.next();
+      return ERRORCLASS;
+    }
+
+    function tokenStringFactory(delimiter) {
+      while ("rub".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
+        delimiter = delimiter.substr(1);
+
+      var singleline = delimiter.length == 1;
+      var OUTCLASS = "string";
+
+      function tokenString(stream, state) {
+        while (!stream.eol()) {
+          stream.eatWhile(/[^'"\\]/);
+          if (stream.eat("\\")) {
+            stream.next();
+            if (singleline && stream.eol())
+              return OUTCLASS;
+          } else if (stream.match(delimiter)) {
+            state.tokenize = tokenBase;
+            return OUTCLASS;
+          } else {
+            stream.eat(/['"]/);
+          }
+        }
+        if (singleline) {
+          if (parserConf.singleLineStringErrors)
+            return ERRORCLASS;
+          else
+            state.tokenize = tokenBase;
+        }
+        return OUTCLASS;
+      }
+      tokenString.isString = true;
+      return tokenString;
+    }
+
+    function pushPyScope(state) {
+      while (top(state).type != "py") state.scopes.pop()
+      state.scopes.push({offset: top(state).offset + conf.indentUnit,
+                         type: "py",
+                         align: null})
+    }
+
+    function pushBracketScope(stream, state, type) {
+      var align = stream.match(/^([\s\[\{\(]|#.*)*$/, false) ? null : stream.column() + 1
+      state.scopes.push({offset: state.indent + hangingIndent,
+                         type: type,
+                         align: align})
+    }
+
+    function dedent(stream, state) {
+      var indented = stream.indentation();
+      while (top(state).offset > indented) {
+        if (top(state).type != "py") return true;
+        state.scopes.pop();
+      }
+      return top(state).offset != indented;
+    }
+
+    function tokenLexer(stream, state) {
+      if (stream.sol()) state.beginningOfLine = true;
+
+      var style = state.tokenize(stream, state);
+      var current = stream.current();
+
+      // Handle decorators
+      if (state.beginningOfLine && current == "@")
+        return stream.match(identifiers, false) ? "meta" : py3 ? "operator" : ERRORCLASS;
+
+      if (/\S/.test(current)) state.beginningOfLine = false;
+
+      if ((style == "variable" || style == "builtin")
+          && state.lastToken == "meta")
+        style = "meta";
+
+      // Handle scope changes.
+      if (current == "pass" || current == "return")
+        state.dedent += 1;
+
+      if (current == "lambda") state.lambda = true;
+      if (current == ":" && !state.lambda && top(state).type == "py")
+        pushPyScope(state);
+
+      var delimiter_index = current.length == 1 ? "[({".indexOf(current) : -1;
+      if (delimiter_index != -1)
+        pushBracketScope(stream, state, "])}".slice(delimiter_index, delimiter_index+1));
+
+      delimiter_index = "])}".indexOf(current);
+      if (delimiter_index != -1) {
+        if (top(state).type == current) state.indent = state.scopes.pop().offset - hangingIndent
+        else return ERRORCLASS;
+      }
+      if (state.dedent > 0 && stream.eol() && top(state).type == "py") {
+        if (state.scopes.length > 1) state.scopes.pop();
+        state.dedent -= 1;
+      }
+
+      return style;
+    }
+
+    var external = {
+      startState: function(basecolumn) {
+        return {
+          tokenize: tokenBase,
+          scopes: [{offset: basecolumn || 0, type: "py", align: null}],
+          indent: basecolumn || 0,
+          lastToken: null,
+          lambda: false,
+          dedent: 0
+        };
+      },
+
+      token: function(stream, state) {
+        var addErr = state.errorToken;
+        if (addErr) state.errorToken = false;
+        var style = tokenLexer(stream, state);
+
+        if (style && style != "comment")
+          state.lastToken = (style == "keyword" || style == "punctuation") ? stream.current() : style;
+        if (style == "punctuation") style = null;
+
+        if (stream.eol() && state.lambda)
+          state.lambda = false;
+        return addErr ? style + " " + ERRORCLASS : style;
+      },
+
+      indent: function(state, textAfter) {
+        if (state.tokenize != tokenBase)
+          return state.tokenize.isString ? CodeMirror.Pass : 0;
+
+        var scope = top(state), closing = scope.type == textAfter.charAt(0)
+        if (scope.align != null)
+          return scope.align - (closing ? 1 : 0)
+        else
+          return scope.offset - (closing ? hangingIndent : 0)
+      },
+
+      electricInput: /^\s*[\}\]\)]$/,
+      closeBrackets: {triples: "'\""},
+      lineComment: "#",
+      fold: "indent"
+    };
+    return external;
+  });
+
+  CodeMirror.defineMIME("text/x-python", "python");
+
+  var words = function(str) { return str.split(" "); };
+
+  CodeMirror.defineMIME("text/x-cython", {
+    name: "python",
+    extra_keywords: words("by cdef cimport cpdef ctypedef enum except"+
+                          "extern gil include nogil property public"+
+                          "readonly struct union DEF IF ELIF ELSE")
+  });
+
+});

static/src/js/utils/codeMirror.js

@@ -1,4 +1,4 @@
-define("codeMirror", ["_codeMirror", "codeMirrorClang"], function(CodeMirror){
+define("codeMirror", ["_codeMirror", "codeMirrorClang","codeMirrorPython"], function(CodeMirror){
     function codeMirror(selector, language){
         return CodeMirror.fromTextArea(selector,
             {

template/src/oj/contest/submissions_list.html

@@ -42,6 +42,7 @@
                             <li><a href="/contest/{{ contest.id }}/submissions/?language=1{% if user_id %}&user_id={{ user_id }}{% endif %}">C</a></li>
                             <li><a href="/contest/{{ contest.id }}/submissions/?language=2{% if user_id %}&user_id={{ user_id }}{% endif %}">C++</a></li>
                             <li><a href="/contest/{{ contest.id }}/submissions/?language=3{% if user_id %}&user_id={{ user_id }}{% endif %}">Java</a></li>
+                            <li><a href="/contest/{{ contest.id }}/submissions/?language=4{% if user_id %}&user_id={{ user_id }}{% endif %}">Python</a></li>
                             <li><a href="/contest/{{ contest.id }}/submissions/{% if user_id %}&user_id={{ user_id }}{% endif %}">取消筛选</a></li>
                         </ul>
                     </div>

template/src/oj/problem/_submit_problem.html

@@ -10,6 +10,9 @@
                     <label class="radio-inline">
                         <input type="radio" name="language" value="3"> Java (Oracle JDK 1.7)
                     </label>
+                    <label class="radio-inline">
+                        <input type="radio" name="language" value="4"> Python (Python 2.7)
+                    </label>
                 </div>
             </div>
             <div id="code-field">

template/src/oj/submission/my_submission.html

@@ -114,15 +114,8 @@
 {% block js_block %}
     <script>
         require(["jquery", "codeMirror", "csrfToken"], function ($, codeMirror, csrfTokenHeader) {
-            {% ifequal submission.language 1 %}
-                var language = "text/x-csrc";
-            {% else %}
-                {% ifequal submission.language 2 %}
-                    var language = "text/x-c++src";
-                {% else %}
-                    var language = "text/x-java";
-                {% endifequal %}
-            {% endifequal %}
+
+            var language = "{{ submission.language|translate_language_mime|safe }}";
             var codeEditor = codeMirror($("#code-editor")[0], language);
             codeEditor.setOption("readOnly", true);
 

template/src/oj/submission/submissions_list.html

@@ -23,6 +23,7 @@
                             <li><a href="/submissions/?language=1{% if not show_all %}&my=true{% endif %}">C</a></li>
                             <li><a href="/submissions/?language=2{% if not show_all %}&my=true{% endif %}">C++</a></li>
                             <li><a href="/submissions/?language=3{% if not show_all %}&my=true{% endif %}">Java</a></li>
+                            <li><a href="/submissions/?language=4{% if not show_all %}&my=true{% endif %}">Python</a></li>
                             <li><a href="/submissions/">取消筛选</a></li>
                         </ul>
                     </div>

utils/templatetags/submission.py

@@ -26,7 +26,11 @@ def translate_signal(value):
 
 
 def translate_language(value):
-    return {1: "C", 2: "C++", 3: "Java"}[value]
+    return {1: "C", 2: "C++", 3: "Java", 4: "Python"}[value]
+
+
+def translate_language_mime(value):
+    return {1: "text/x-csrc", 2: "text/x-c++src", 3: "text/x-java", 4: "text/x-python"}[value]
 
 
 def translate_result_class(value):
@@ -42,3 +46,4 @@ register.filter("translate_result", translate_result)
 register.filter("translate_language", translate_language)
 register.filter("translate_result_class", translate_result_class)
 register.filter("translate_signal", translate_signal)
+register.filter("translate_language_mime", translate_language_mime)