/// <summary>
/// Executes a Python script with custom variable names. Script may be a string
/// read from a file, for example. Pass a list of names (matching the variable
/// names in the script) to bindingNames and pass a corresponding list of values
/// to bindingValues.
/// </summary>
/// <param name="code">Python script as a string.</param>
/// <param name="bindingNames">Names of values referenced in Python script.</param>
/// <param name="bindingValues">Values referenced in Python script.</param>
public static object EvaluateIronPythonScript(
string code,
IList bindingNames,
[ArbitraryDimensionArrayImport] IList bindingValues)
{
var engine = Python.CreateEngine();
var scope = engine.CreateScope();
var amt = Math.Min(bindingNames.Count, bindingValues.Count);
for (int i = 0; i < amt; i++)
{
scope.SetVariable((string)bindingNames[i], InputMarshaler.Marshal(bindingValues[i]));
}
try
{
OnEvaluationBegin(engine, scope, code, bindingValues);
engine.CreateScriptSourceFromString(code).Execute(scope);
}
catch (Exception e)
{
OnEvaluationEnd(false, engine, scope, code, bindingValues);
throw e;
}
OnEvaluationEnd(true, engine, scope, code, bindingValues);
var result = scope.ContainsVariable("OUT") ? scope.GetVariable("OUT") : null;
return(OutputMarshaler.Marshal(result));
}
/// <summary>
/// Executes a Python script with custom variable names. Script may be a string
/// read from a file, for example. Pass a list of names (matching the variable
/// names in the script) to bindingNames and pass a corresponding list of values
/// to bindingValues.
/// </summary>
/// <param name="code">Python script as a string.</param>
/// <param name="bindingNames">Names of values referenced in Python script.</param>
/// <param name="bindingValues">Values referenced in Python script.</param>
public static object EvaluatePythonScript(
string code,
IList bindingNames,
[ArbitraryDimensionArrayImport] IList bindingValues)
{
if (code != prev_code)
{
Python.Included.Installer.SetupPython().Wait();
if (!PythonEngine.IsInitialized)
{
PythonEngine.Initialize();
PythonEngine.BeginAllowThreads();
}
IntPtr gs = PythonEngine.AcquireLock();
try
{
using (Py.GIL())
{
using (PyScope scope = Py.CreateScope())
{
int amt = Math.Min(bindingNames.Count, bindingValues.Count);
for (int i = 0; i < amt; i++)
{
scope.Set((string)bindingNames[i], InputMarshaler.Marshal(bindingValues[i]).ToPython());
}
try
{
OnEvaluationBegin(scope, code, bindingValues);
scope.Exec(code);
OnEvaluationEnd(false, scope, code, bindingValues);
var result = scope.Contains("OUT") ? scope.Get("OUT") : null;
return(OutputMarshaler.Marshal(result));
}
catch (Exception e)
{
OnEvaluationEnd(false, scope, code, bindingValues);
throw e;
}
}
}
}
catch (PythonException pe)
{
throw pe;
}
finally
{
PythonEngine.ReleaseLock(gs);
}
}
return(null);
}
/// <summary>
/// Executes a Python script with custom variable names. Script may be a string
/// read from a file, for example. Pass a list of names (matching the variable
/// names in the script) to bindingNames and pass a corresponding list of values
/// to bindingValues.
/// </summary>
/// <param name="code">Python script as a string.</param>
/// <param name="bindingNames">Names of values referenced in Python script.</param>
/// <param name="bindingValues">Values referenced in Python script.</param>
public static object EvaluateIronPythonScript(
string code,
IList bindingNames,
[ArbitraryDimensionArrayImport] IList bindingValues)
{
if (code != prev_code)
{
ScriptSource script = Python.CreateEngine().CreateScriptSourceFromString(code);
script.Compile();
prev_script = script;
prev_code = code;
}
ScriptEngine engine = prev_script.Engine;
ScriptScope scope = engine.CreateScope();
int amt = Math.Min(bindingNames.Count, bindingValues.Count);
for (int i = 0; i < amt; i++)
{
scope.SetVariable((string)bindingNames[i], InputMarshaler.Marshal(bindingValues[i]));
}
try
{
OnEvaluationBegin(engine, scope, code, bindingValues);
prev_script.Execute(scope);
}
catch (Exception e)
{
OnEvaluationEnd(false, engine, scope, code, bindingValues);
var eo = engine.GetService <ExceptionOperations>();
string error = eo.FormatException(e);
throw new Exception(error);
}
OnEvaluationEnd(true, engine, scope, code, bindingValues);
var result = scope.ContainsVariable("OUT") ? scope.GetVariable("OUT") : null;
return(OutputMarshaler.Marshal(result));
}
/// <summary>
/// Executes a Python script with custom variable names. Script may be a string
/// read from a file, for example. Pass a list of names (matching the variable
/// names in the script) to bindingNames and pass a corresponding list of values
/// to bindingValues.
/// </summary>
/// <param name="code">Python script as a string.</param>
/// <param name="bindingNames">Names of values referenced in Python script.</param>
/// <param name="bindingValues">Values referenced in Python script.</param>
public static object EvaluatePythonScript(
string code,
IList bindingNames,
[ArbitraryDimensionArrayImport] IList bindingValues)
{
var evaluationSuccess = true;
if (code == null)
{
return(null);
}
InstallPython();
if (!PythonEngine.IsInitialized)
{
PythonEngine.Initialize();
PythonEngine.BeginAllowThreads();
}
IntPtr gs = PythonEngine.AcquireLock();
try
{
using (Py.GIL())
{
if (globalScope == null)
{
globalScope = CreateGlobalScope();
}
using (PyScope scope = Py.CreateScope())
{
// Reset the 'sys.path' value to the default python paths on node evaluation.
var pythonNodeSetupCode = "import sys" + Environment.NewLine + "sys.path = sys.path[0:3]";
scope.Exec(pythonNodeSetupCode);
ProcessAdditionalBindings(scope, bindingNames, bindingValues);
int amt = Math.Min(bindingNames.Count, bindingValues.Count);
for (int i = 0; i < amt; i++)
{
scope.Set((string)bindingNames[i], InputMarshaler.Marshal(bindingValues[i]).ToPython());
}
try
{
OnEvaluationBegin(scope, code, bindingValues);
scope.Exec(code);
var result = scope.Contains("OUT") ? scope.Get("OUT") : null;
return(OutputMarshaler.Marshal(result));
}
catch (Exception e)
{
evaluationSuccess = false;
var traceBack = GetTraceBack(e);
if (!string.IsNullOrEmpty(traceBack))
{
// Throw a new error including trace back info added to the message
throw new InvalidOperationException($"{e.Message} {traceBack}", e);
}
else
{
throw e;
}
}
finally
{
OnEvaluationEnd(evaluationSuccess, scope, code, bindingValues);
}
}
}
}
finally
{
PythonEngine.ReleaseLock(gs);
}
}
/// <summary>
/// Executes a Python script with custom variable names. Script may be a string
/// read from a file, for example. Pass a list of names (matching the variable
/// names in the script) to bindingNames and pass a corresponding list of values
/// to bindingValues.
/// </summary>
/// <param name="code">Python script as a string.</param>
/// <param name="bindingNames">Names of values referenced in Python script.</param>
/// <param name="bindingValues">Values referenced in Python script.</param>
public static object EvaluateIronPythonScript(
string code,
IList bindingNames,
[ArbitraryDimensionArrayImport] IList bindingValues)
{
// TODO - it would be nice if users could modify a preference
// setting enabling the ability to load additional paths
// Container for paths that will be imported in the PythonEngine
List <string> paths = new List <string>();
// Attempt to get the Standard Python Library
string stdLib = PythonStandardLibPath();
if (code != prev_code)
{
ScriptEngine PythonEngine = Python.CreateEngine();
if (!string.IsNullOrEmpty(stdLib))
{
code = "import sys" + System.Environment.NewLine + code;
paths = PythonEngine.GetSearchPaths().ToList();
paths.Add(stdLib);
}
// If any paths were successfully retrieved, append them
if (paths.Count > 0)
{
PythonEngine.SetSearchPaths(paths);
}
ScriptSource script = PythonEngine.CreateScriptSourceFromString(code);
script.Compile();
prev_script = script;
prev_code = code;
}
ScriptEngine engine = prev_script.Engine;
ScriptScope scope = engine.CreateScope();
ProcessAdditionalBindings(scope, bindingNames, bindingValues);
int amt = Math.Min(bindingNames.Count, bindingValues.Count);
for (int i = 0; i < amt; i++)
{
scope.SetVariable((string)bindingNames[i], InputMarshaler.Marshal(bindingValues[i]));
}
try
{
OnEvaluationBegin(engine, scope, code, bindingValues);
prev_script.Execute(scope);
}
catch (Exception e)
{
OnEvaluationEnd(false, engine, scope, code, bindingValues);
var eo = engine.GetService <ExceptionOperations>();
string error = eo.FormatException(e);
throw new Exception(error);
}
OnEvaluationEnd(true, engine, scope, code, bindingValues);
var result = scope.ContainsVariable("OUT") ? scope.GetVariable("OUT") : null;
return(OutputMarshaler.Marshal(result));
}
