...

def actor_name(code_args = None, xml_parameters = None, job_settings = None):
	return None.  

# no returned values!

Assumptions:

General:

• Python version 3.6+
• Programming conventions (PEP 8?)
  • https://www.python.org/dev/peps/pep-0008/
• NO BACKWARD COMPATIBILITY  - Incompatibility with existing Python actors!
• All input arguments (user method arg and info determining how to launch job ) 'structured' within classes
• Classes will be defined for:
  • user code arguments - autogenerated
  • XML input parameters
  • job settings
• The order of arguments  will be arbitrary - implemented as arguments list (*args) or keyword arguments list (**kwargs)
• All arguments will be optional. If object of given class will be not provided - default values will be used.

...

• All arguments 'packed' within a class <ActorName>Arguments
• Class will be automatically generated, and copied to a wrapper package
• Order of attributes corresponds to order of  user function arguments
• Every attribute is a class ToolNameArgument keeping not only value but also metadata describing argument:
  • Name
  • Type of value
  • Value
  • IN or OUT
• Attributes' setters/getters will be overridden - user will set only value of argument 
  • To reduce complexity visible by user
  • To check if arg type is correct

# AUTO GENERATED !
class <ActorName>Arguments :  
  def __init__(self):
    self.arg1 = ToolNameArgument( 'InVar', int, None, IN)
    self.arg2 = ToolNameArgument( 'OutVar', double, None, OUT)
	self.diagnostic_info = ToolNameDiagnosticInfo()

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
class ToolNameArgument :
  def __init__(self, name, type, sub_type, intent):
    self.name =  name #'argument name' READ ONLY
	self.type = type # (INT, DOUBLE, STRING, COMPLEX, IDS) READ ONLY
	self.sub_type = sub_type  #'equilibrium'  for IDSes only READ ONLY
	self.intent = intent # (IN/OUT) READ ONLY
	self.value  = 7. # to be set by user
    
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
class ToolNameDiagnosticInfo :
  def __init__(self):
    self.status  
	self.message

...

• OUT arguments - wrapper will update fields of <ActorName>Arguments class

Open points

...

1. https://www.python.org/dev/peps/pep-0008/

...

1. Only IN and OUT arguments (no INOUT arguments)
2. Arrays as an inout of user method- only "dynamic" - i.e. of variable size 
3. Wrapper results:
   1. OUT arguments - wrapper will update fields of <ActorName>Arguments class
   2. INCOMPATIBILITY 
4. Diagnostic info 
   1. Info returned from user method
      1. status flag
      2. user defined message
   2. 'Q: can it be mandatory in user sbrt?
5.  Sandbox:
   1. Do we need this feature?
6. Alternative library:
   1. Do we need this feature?

...