Buildings.Utilities.IO.Python_3_8.Functions.BaseClasses

Package with functions that call Python

Information

This package contains functions that call Python.

Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).

Package Content

Name	Description
PythonObject	class used to create the external object: PythonObject
exchange	Function that communicates with Python

Buildings.Utilities.IO.Python_3_8.Functions.BaseClasses.PythonObject

class used to create the external object: PythonObject

Information

Class derived from ExternalObject having two local external functions named destructor and constructor.

These functions create and release an external object that allows the storage of a Python object.

Extends from ExternalObject.

Modelica definition

class PythonObject "class used to create the external object: PythonObject" extends ExternalObject; impure function constructor "Construct an external object that can be used to store a Python object" output PythonObject pytObj; external "C" pytObj = initPythonMemory(); end constructor; impure function destructor "Release memory" input PythonObject pytObj; external "C" freePythonMemory(pytObj); end destructor; end PythonObject;

Buildings.Utilities.IO.Python_3_8.Functions.BaseClasses.exchange

Function that communicates with Python

Information

This function exchanges data with Python. See Buildings.Utilities.IO.Python_3_8.UsersGuide for instructions, and Buildings.Utilities.IO.Python_3_8.Functions.Examples for examples.

Inputs

Type	Name	Default	Description
String	moduleName		Name of the python module that contains the function
String	functionName	moduleName	Name of the python function
PythonObject	pytObj		Memory that holds the Python object
Boolean	passPythonObject		Set to true if the Python function returns and receives an object, see User's Guide
String	pythonPath		Value of PYTHONPATH environment variable
Real	dblWri[max(1, nDblWri)]		Double values to write
Integer	intWri[max(1, nIntWri)]		Integer values to write
String	strWri[max(1, nStrWri)]		String values to write
Integer	nDblWri		Number of double values to write
Integer	nDblRea		Number of double values to read
Integer	nIntWri		Number of integer values to write
Integer	nIntRea		Number of integer values to read
Integer	nStrWri		Number of strings to write

Outputs

Type	Name	Description
Real	dblRea[max(1, nDblRea)]	Double values returned by Python
Integer	intRea[max(1, nIntRea)]	Integer values returned by Python

Modelica definition

impure function exchange "Function that communicates with Python" input String moduleName "Name of the python module that contains the function"; input String functionName=moduleName "Name of the python function"; input BaseClasses.PythonObject pytObj "Memory that holds the Python object"; input Boolean passPythonObject "Set to true if the Python function returns and receives an object, see User's Guide"; input String pythonPath "Value of PYTHONPATH environment variable"; input Real dblWri[max(1, nDblWri)] "Double values to write"; input Integer intWri[max(1, nIntWri)] "Integer values to write"; input String strWri[max(1, nStrWri)] "String values to write"; input Integer nDblWri(min=0) "Number of double values to write"; input Integer nDblRea(min=0) "Number of double values to read"; input Integer nIntWri(min=0) "Number of integer values to write"; input Integer nIntRea(min=0) "Number of integer values to read"; input Integer nStrWri(min=0) "Number of strings to write"; // input Integer nStrRea(min=0) "Number of strings to read"; // input Integer strLenRea(min=0) // "Maximum length of each string that is read. If exceeded, the simulation stops with an error"; output Real dblRea[max(1, nDblRea)] "Double values returned by Python"; output Integer intRea[max(1, nIntRea)] "Integer values returned by Python"; external "C" pythonExchangeValues(moduleName, functionName, pythonPath, dblWri, nDblWri, dblRea, nDblRea, intWri, nIntWri, intRea, nIntRea, strWri, nStrWri, pytObj, passPythonObject); end exchange;