public void TestEval()
{
using (Py.GIL())
{
ps.Set("a", 1);
var result = ps.Eval <int>("a + 2");
Assert.AreEqual(3, result);
}
}
static async Task Main(string[] args)
{
await Installer.SetupPython();
using (Py.GIL())
{
string a = "def funcname(a):"
+ Environment.NewLine
+ " i = 12"
+ Environment.NewLine
+ " a = i+25"
+ Environment.NewLine
+ " print(i)"
+ Environment.NewLine
+ " print(a)"
+ Environment.NewLine
+ " return a";
PyScope pyScope = Py.CreateScope();
PyObject pyObject = PythonEngine.ModuleFromString("a", a);
pyScope.ImportAll(pyObject);
PyObject eval = pyScope.Eval("funcname(15)");
Console.Out.WriteLine("eval = {0}", eval);
eval.GetPythonType().WriteLine();
var @as = eval.As <int>();
Console.Out.WriteLine("@as = {0}", @as);
}
Console.ReadKey();
}
public async Task <PyObject> PythonResponseToBytearray(HttpResponseMessage resp)
{
//Debug.WriteLine("PythonResponseToBytearray");
byte[] content = await resp.Content.ReadAsByteArrayAsync();
using (Py.GIL())
{
PyObject bytearray = PyScope.Eval("bytearray(" + content.Length + ")");
PythonCompat.WriteToBuffer(bytearray, content);
return(bytearray);
}
}
public object QueryAsync(string code)
{
using IServiceScope scope = _serviceProvider.CreateScope();
UsageRecordsRepository repository = scope.ServiceProvider.GetRequiredService <UsageRecordsRepository>();
IEnumerable <UsageRecord> usageRecords = repository.UsageRecords.AsNoTracking();
using Py.GILState gil = Py.GIL();
using PyScope pyScope = Py.CreateScope();
pyScope.Set(nameof(usageRecords), usageRecords.ToPython());
PyObject pyObject = pyScope.Eval(code);
if (pyObject.IsIterable())
{
return(pyObject.Select(item => item.AsManagedObject(typeof(object))));
}
else
{
object result = pyObject.AsManagedObject(typeof(object));
return(result);
}
}
public object Run(
[InputPin(Name = "caption", Description = "The caption of this module", PropertyMode = PropertyMode.Always, Editor = WellKnownEditors.SingleLineText)] string caption,
[InputPin(Name = "expression", Description = "The Python expression", PropertyMode = PropertyMode.Always, Editor = WellKnownEditors.SingleLineText)] string expression,
[InputPin(Name = "useMainThread", Description = "Whether to run the code on the Python main thread", PropertyMode = PropertyMode.Always, Editor = WellKnownEditors.CheckBox, DefaultValue = "false")] bool useMainThread,
[InputPin(Name = "input", Description = "These are the inputs for the expression", PropertyMode = PropertyMode.Never)] params object[] inputs
)
{
object evalBlock()
{
using (PyScope ps = Py.CreateScope())
{
int i = 0;
foreach (var inputPin in this.dynamicInputPin.Pins)
{
if (inputPin.Connections.Any())
{
ps.Set(inputPin.Id, PyConvert.ToPyObject(inputs[i]));
}
i++;
}
ps.Set(dynamicInputPin.Alias + "s", inputs);
PyObject evalResult = ps.Eval(expression);
return(PyConvert.ToClrObject(evalResult, typeof(object)));
}
}
if (useMainThread)
{
return(mainThread.EvalSync(evalBlock));
}
else
{
using (Py.GIL())
{
return(evalBlock());
}
}
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
PyScope scope = PyScriptManager.ScriptScopes["Temp"];
scope.ImportAll("math");
scope.Set("value", value);
PyObject result = scope.Eval(Script);
string errorMsg;
try
{
errorMsg = result.As <string>(); //Expect true(bool) for valid input, an error message string for invalid input
}
catch (InvalidCastException)
{
return(new ValidationResult(true, null));
}
return(new ValidationResult(false, errorMsg));
}
