text: #Copyright (c) 2009-10, Walter Bender (on behalf of Sugar Labs)
  
  #Permission is hereby granted, free of charge, to any person obtaining a copy
  #of this software and associated documentation files (the "Software"), to deal
  #in the Software without restriction, including without limitation the rights
  #to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  #copies of the Software, and to permit persons to whom the Software is
  #furnished to do so, subject to the following conditions:
  
  #The above copyright notice and this permission notice shall be included in
  #all copies or substantial portions of the Software.
  
  #THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  #IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  #FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  #AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  #LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  #OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  #THE SOFTWARE.
  
  # A naive approach to running myfunc in a jail
  import traceback
  from time import *
  from math import *
  
  
  def myfunc(f, args):
      ''' Run inline Python code '''
      # check to make sure no import calls are made
      if len(args) == 1:
          myf = 'def f(x): return ' + f.replace('import', '')
          userdefined = {}
          exec myf in globals(), userdefined
          return userdefined.values()[0](args[0])
      elif len(args) == 2:
          myf = 'def f(x, y): return ' + f.replace('import', '')
          userdefined = {}
          exec myf in globals(), userdefined
          return userdefined.values()[0](args[0], args[1])
      elif len(args) == 3:
          myf = 'def f(x, y, z): return ' + f.replace('import', '')
          userdefined = {}
          exec myf in globals(), userdefined
          return userdefined.values()[0](args[0], args[1], args[2])
  
  
  def myfunc_import(parent, f, x):
      ''' Run Python code imported from Journal '''
      if 'def myblock(lc,' in f:
          base_class = parent.tw.lc  # pre-v107, we passed lc
      else:
          base_class = parent.tw  # as of v107, we pass tw
      userdefined = {}
      try:
          exec f in globals(), userdefined
          return userdefined['myblock'](base_class, x)
      except:
          traceback.print_exc()
          return None
  