Environment
- Pythonnet version: 3.0.3
- Python version: 310
- Operating System: Windows 11
- .NET Runtime: 8.0.206
Details
- I am trying to call a Python method from C# and pass a boolean value as a keyword argument. For this, I convert a C# dictionary (with string keys and object values) to a PyDict by iterating through each kvp in the C# dictionary and converting it to PyObject. Since there is no out-of-the-box PyBool(value) object, I used PyObject.FromManagedObject(value) to convert the C# boolean to a Python boolean. However, this approach didn't work as expected. The Python method expects a bool, which passed as a keyword argument is received as a Boolean with an uppercase "B", causing it to fail.
public static string PythonTestRunner(string pyDirPath, string pyModule, string pyMethod, Dictionary<string, object> argsDict)
{
try
{
using (Py.GIL())
{
dynamic os = Py.Import("os");
dynamic sys = Py.Import("sys");
string currentPath = os.getcwd().ToString();
string fullDirPath = os.path.join(currentPath, pyDirPath).ToString();
sys.path.append(fullDirPath);
dynamic module = Py.Import(pyModule);
dynamic method = module.GetAttr(pyMethod);
PyDict kwargs = new PyDict();
foreach (var kvp in argsDict)
{
PyObject pyKey = new PyString(kvp.Key);
PyObject pyValue = ConvertToPyObject(kvp.Value);
kwargs[pyKey] = pyValue;
}
dynamic resultMessage = method.Invoke(new PyTuple(), kwargs);
return (string)resultMessage;
}
}
catch (Exception ex)
{
// Log the error and rethrow it
throw;
}
}public static PyObject ConvertToPyObject(dynamic value)
{
if (value == null)
return PyObject.None;
else if (value is string)
return new PyString(value);
else if (value is int)
return new PyInt(value);
else if (value is bool)
return PyObject.FromManagedObject(value);
else
return PyObject.FromManagedObject(value);
}# test_module.py
def test_method(param1: bool):
error_messages = []
if not isinstance(param1, bool):
error_messages.append(f"testBoolTrue is not a boolean, but {type(param1).__name__}")
# Determine message
result_message = "Invalid data types: " + ", ".join(error_messages)
return result_message
- Message: Invalid data types: param1 is not a boolean, but Boolean
Environment
Details