diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -33,6 +33,7 @@
 //= require jquery-tablesorter
 //= require best_in_place
 //= require best_in_place.jquery-ui
+//= require brython
 
 // since this is after blank line, it is not downloaded
 //x= require prototype
diff --git a/app/views/sources/direct_edit.html.haml b/app/views/sources/direct_edit.html.haml
--- a/app/views/sources/direct_edit.html.haml
+++ b/app/views/sources/direct_edit.html.haml
@@ -25,3 +25,233 @@
         .form-group
           = submit_tag 'Submit', class: 'btn btn-success', id: 'live_submit', 
             data: {confirm: "Submitting this source code for task #{@problem.long_name}?"}
+  .row
+    .col-md-12
+      %h2 Console
+      %textarea#console{style: 'height: 100%; width: 100%;background-color:#000;color:#fff;font-family: consolas, monaco, "Droid Sans Mono";',rows: 20}
+
+:javascript
+  $(document).ready(function() {
+    brython();
+  });
+
+
+%script#__main__{type:'text/python3'}
+  :plain
+    import sys
+    import traceback
+
+    from browser import document as doc
+    from browser import window, alert, console
+
+    _credits = """    Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
+        for supporting Python development.  See www.python.org for more information."""
+
+    _copyright = """Copyright (c) 2012, Pierre Quentel pierre.quentel@gmail.com
+    All Rights Reserved.
+
+    Copyright (c) 2001-2013 Python Software Foundation.
+    All Rights Reserved.
+
+    Copyright (c) 2000 BeOpen.com.
+    All Rights Reserved.
+
+    Copyright (c) 1995-2001 Corporation for National Research Initiatives.
+    All Rights Reserved.
+
+    Copyright (c) 1991-1995 Stichting Mathematisch Centrum, Amsterdam.
+    All Rights Reserved."""
+
+    _license = """Copyright (c) 2012, Pierre Quentel pierre.quentel@gmail.com
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without 
+    modification, are permitted provided that the following conditions are met:
+
+    Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer. Redistributions in binary 
+    form must reproduce the above copyright notice, this list of conditions and 
+    the following disclaimer in the documentation and/or other materials provided 
+    with the distribution.
+    Neither the name of the <ORGANIZATION> nor the names of its contributors may 
+    be used to endorse or promote products derived from this software without 
+    specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+    POSSIBILITY OF SUCH DAMAGE.
+    """
+
+    def credits():
+        print(_credits)
+    credits.__repr__ = lambda:_credits
+
+    def copyright():
+        print(_copyright)
+    copyright.__repr__ = lambda:_copyright
+
+    def license():
+        print(_license)
+    license.__repr__ = lambda:_license
+
+    def write(data):
+        doc['console'].value += str(data)
+
+
+    sys.stdout.write = sys.stderr.write = write
+    history = []
+    current = 0
+    _status = "main"  # or "block" if typing inside a block
+
+    # execution namespace
+    editor_ns = {'credits':credits,
+        'copyright':copyright,
+        'license':license,
+        '__name__':'__main__'}  
+
+    def cursorToEnd(*args):
+        pos = len(doc['console'].value)
+        doc['console'].setSelectionRange(pos, pos)
+        doc['console'].scrollTop = doc['console'].scrollHeight
+
+    def get_col(area):
+        # returns the column num of cursor
+        sel = doc['console'].selectionStart
+        lines = doc['console'].value.split('\n')
+        for line in lines[:-1]:
+            sel -= len(line) + 1
+        return sel
+
+
+    def myKeyPress(event):
+        global _status, current
+        if event.keyCode == 9:  # tab key
+            event.preventDefault()
+            doc['console'].value += "    "
+        elif event.keyCode == 13:  # return
+            src = doc['console'].value
+            if _status == "main":
+                currentLine = src[src.rfind('>>>') + 4:]
+            elif _status == "3string":
+                currentLine = src[src.rfind('>>>') + 4:]
+                currentLine = currentLine.replace('\n... ', '\n')
+            else:
+                currentLine = src[src.rfind('...') + 4:]
+            if _status == 'main' and not currentLine.strip():
+                doc['console'].value += '\n>>> '
+                event.preventDefault()
+                return
+            doc['console'].value += '\n'
+            history.append(currentLine)
+            current = len(history)
+            if _status == "main" or _status == "3string":
+                try:
+                    _ = editor_ns['_'] = eval(currentLine, editor_ns)
+                    if _ is not None:
+                        write(repr(_)+'\n')
+                    doc['console'].value += '>>> '
+                    _status = "main"
+                except IndentationError:
+                    doc['console'].value += '... '
+                    _status = "block"
+                except SyntaxError as msg:
+                    if str(msg) == 'invalid syntax : triple string end not found' or \
+                        str(msg).startswith('Unbalanced bracket'):
+                        doc['console'].value += '... '
+                        _status = "3string"
+                    elif str(msg) == 'eval() argument must be an expression':
+                        try:
+                            exec(currentLine, editor_ns)
+                        except:
+                            traceback.print_exc()
+                        doc['console'].value += '>>> '
+                        _status = "main"
+                    elif str(msg) == 'decorator expects function':
+                        doc['console'].value += '... '
+                        _status = "block"
+                    else:
+                        traceback.print_exc()
+                        doc['console'].value += '>>> '
+                        _status = "main"
+                except:
+                    traceback.print_exc()
+                    doc['console'].value += '>>> '
+                    _status = "main"
+            elif currentLine == "":  # end of block
+                block = src[src.rfind('>>>') + 4:].splitlines()
+                block = [block[0]] + [b[4:] for b in block[1:]]
+                block_src = '\n'.join(block)
+                # status must be set before executing code in globals()
+                _status = "main"
+                try:
+                    _ = exec(block_src, editor_ns)
+                    if _ is not None:
+                        print(repr(_))
+                except:
+                    traceback.print_exc()
+                doc['console'].value += '>>> '
+            else:
+                doc['console'].value += '... '
+            
+            cursorToEnd()
+            event.preventDefault()
+
+    def myKeyDown(event):
+        global _status, current
+        if event.keyCode == 37:  # left arrow
+            sel = get_col(doc['console'])
+            if sel < 5:
+                event.preventDefault()
+                event.stopPropagation()
+        elif event.keyCode == 36:  # line start
+            pos = doc['console'].selectionStart
+            col = get_col(doc['console'])
+            doc['console'].setSelectionRange(pos - col + 4, pos - col + 4)
+            event.preventDefault()
+        elif event.keyCode == 38:  # up
+            if current > 0:
+                pos = doc['console'].selectionStart
+                col = get_col(doc['console'])
+                # remove current line
+                doc['console'].value = doc['console'].value[:pos - col + 4]
+                current -= 1
+                doc['console'].value += history[current]
+            event.preventDefault()
+        elif event.keyCode == 40:  # down
+            if current < len(history) - 1:
+                pos = doc['console'].selectionStart
+                col = get_col(doc['console'])
+                # remove current line
+                doc['console'].value = doc['console'].value[:pos - col + 4]
+                current += 1
+                doc['console'].value += history[current]
+            event.preventDefault()
+        elif event.keyCode == 8:  # backspace
+            src = doc['console'].value
+            lstart = src.rfind('\n')
+            if (lstart == -1 and len(src) < 5) or (len(src) - lstart < 6):
+                event.preventDefault()
+                event.stopPropagation()
+
+
+    doc['console'].bind('keypress', myKeyPress)
+    doc['console'].bind('keydown', myKeyDown)
+    doc['console'].bind('click', cursorToEnd)
+    v = sys.implementation.version
+    doc['console'].value = "Brython %s.%s.%s on %s %s\n>>> " % (
+        v[0], v[1], v[2], window.navigator.appName, window.navigator.appVersion)
+    #doc['console'].value += 'Type "copyright", "credits" or "license" for more information.'
+    doc['console'].focus()
+    cursorToEnd()
+
+
+
+
diff --git a/config/environments/development.rb b/config/environments/development.rb
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -36,5 +36,5 @@
   config.assets.debug = true
 
   # Prevents assets from rendering twice
-  config.serve_static_assets = false
+  config.serve_static_assets = true
 end