old_contents: #!/usr/bin/env python
  #
  # The Exceptions thrown by lcad.
  #
  # Hazen 07/14
  #
  
  class LCadException(Exception):
      def __init__(self, expr, message):
          message = "In expression '" + expr.value[0] + "' at line " + expr.start_line + ", " + message
          Exception.__init__(self, message)
  
  class CannotSetException(LCadException):
      def __init__(self, expr, item_type):
          LCadException.__init__(self, "type '" + item_type + "' is not settable.")
  
  class ExpressionException(LCadException):
      def __init__(self, expr):
          LCadException.__init__(self, "the first element of the list must be a function.")
  
  class IncorrectTypeException(LCadException):
      def __init__(self, expr, expected, got):
          LCadException.__init__(self, "wrong argument type, got '" + got + "' expected '" + expected + "'")
  
  class NoSuchFunctionException(LCadException):
      def __init__(self, expr, unknown_function):
          LCadException.__init__(self, "unknown function '" + unknown_function + "'")
  
  class NumberArgumentsException(LCadException):
      def __init__(self, expr, expected, got):
          LCadException.__init__(self, "wrong number of arguments, got " + str(got) + " expected " + str(expected))
  
  class SymbolNotDefined(LCadException):
      def __init__(self, expr, variable_name):
          LCadException.__init__(self, "symbol '" + variable_name + "' not defined.")
  
  class VariableNotSetException(LCadException):
      def __init__(self, expr, variable_name):
          LCadException.__init__(self, "variable '" + variable_name + "' used before initialization.")
  
  #
  # The MIT License
  #
  # Copyright (c) 2014 Hazen Babcock
  #
  # 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.
  #
  
new_contents: #!/usr/bin/env python
  #
  # The Exceptions thrown by lcad.
  #
  # Hazen 07/14
  #
  
  class LCadException(Exception):
      def __init__(self, expr, message):
          message = "Error at line " + str(expr.start_line) + ", " + message
          Exception.__init__(self, message)
  
  class CannotSetException(LCadException):
      def __init__(self, expr, item_type):
          LCadException.__init__(self, expr, "type '" + item_type + "' is not settable.")
  
  class ExpressionException(LCadException):
      def __init__(self, expr):
          LCadException.__init__(self, expr, "the first element of the list must be a function.")
  
  class IncorrectTypeException(LCadException):
      def __init__(self, expr, expected, got):
          LCadException.__init__(self, expr, "wrong argument type, got '" + got + "' expected '" + expected + "'")
  
  class NoSuchFunctionException(LCadException):
      def __init__(self, expr, unknown_function):
          LCadException.__init__(self, expr, "unknown function '" + unknown_function + "'")
  
  class NumberArgumentsException(LCadException):
      def __init__(self, expr, expected, got):
          LCadException.__init__(self, expr, "wrong number of arguments, got " + str(got) + " expected " + str(expected))
  
  class SymbolNotDefined(LCadException):
      def __init__(self, expr, variable_name):
          LCadException.__init__(self, expr, "symbol '" + variable_name + "' not defined.")
  
  class VariableNotSetException(LCadException):
      def __init__(self, expr, variable_name):
          LCadException.__init__(self, expr, "variable '" + variable_name + "' used before initialization.")
  
  #
  # The MIT License
  #
  # Copyright (c) 2014 Hazen Babcock
  #
  # 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.
  #
  
subject: Fix incorrect call to base class. Don't print value as it is generally meaningless.