DYN-7766: Review Python packages shipped with the PythonNet3 engine

DSPythonNet3/DSPythonNet3Evaluator.cs

@@ -20,7 +20,7 @@
     internal class DynamoCPythonHandleComparer : IEqualityComparer<DynamoCPythonHandle>
     {
 
         public bool Equals(DynamoCPythonHandle x, DynamoCPythonHandle y)
         {
             return x.PythonObjectID.Equals(y.PythonObjectID);
         }
@@ -74,7 +74,7 @@
             try
             {
                 var pyobj = DSPythonNet3Evaluator.globalScope.Get(PythonObjectID.ToString());
                 return pyobj.ToString();
             }
             catch (Exception e)
             {
@@ -143,8 +143,8 @@
             { // Session is null when running unit tests.
                 if (ExecutionEvents.ActiveSession != null)
                 {
                     dynamoLogger = ExecutionEvents.ActiveSession.GetParameterValue(ParameterKeys.Logger) as DynamoLogger;
                     return dynamoLogger;
                 }
                 return dynamoLogger;
             }
@@ -426,6 +426,11 @@
                     Runtime.PythonDLL = Path.Join(Python.Included.Installer.EmbeddedPythonHome, Python.Included.Installer.PYTHON_VERSION + ".dll");
                 }
 
+                // Detect current .NET thread apartment and make comtypes match it
+                var apt = System.Threading.Thread.CurrentThread.GetApartmentState();
+                var comApt = (apt == System.Threading.ApartmentState.STA) ? "STA" : "MTA";
+                Environment.SetEnvironmentVariable("COMTYPES_APARTMENT", comApt, EnvironmentVariableTarget.Process);
+
                 PythonEngine.Initialize();
                 PythonEngine.BeginAllowThreads();
 

DSPythonNet3Wheels/requirements.txt

@@ -11,3 +11,9 @@ python-dateutil == 2.*
 pandas == 2.*
 openpyxl == 3.*
 scipy == 1.*
+shapely == 2.*
+alphashape == 1.*
+comtypes == 1.*
+scikit-learn == 1.*
+ifcopenshell == 0.*
+tabulate == 0.*

DSpythonNet3Tests/PythonLibraryTests.cs

@@ -194,5 +194,77 @@ from openpyxl import Workbook
             var result = DSPythonNet3Evaluator.EvaluatePythonScript(code, empty, empty);
             Assert.That(result, Is.EqualTo(3));
         }
+
+        [Test]
+        public void TestShapelyAvailable()
+        {
+            string code = @"
+from shapely.geometry import Point
+# Circle-like buffer (radius=1) -> area ~= pi; round to 2dp for stability
+area = Point(0,0).buffer(1.0).area
+OUT = round(area, 2)
+";
+            var empty = new ArrayList();
+            var result = DSPythonNet3Evaluator.EvaluatePythonScript(code, empty, empty);
+            Assert.That(result, Is.EqualTo(3.14));
+        }
+
+        [Test]
+        public void TestAlphaShapeAvailable()
+        {
+            string code = @"
+import alphashape
+from shapely.geometry import Point
+pts = [(0,0), (1,0), (1,1), (0,1), (0.5,0.5)]
+alpha = 1.5
+poly = alphashape.alphashape(pts, alpha)
+OUT = poly.is_valid and poly.area > 0
+";
+            var empty = new ArrayList();
+            var result = DSPythonNet3Evaluator.EvaluatePythonScript(code, empty, empty);
+            Assert.That(result, Is.EqualTo(true));
+        }
+
+        [Test]
+        public void TestScikitLearnAvailable()
+        {
+            string code = @"
+from sklearn.cluster import KMeans
+import numpy as np
+X = np.array([[0,0],[0,1],[9,9],[9,8]], dtype=float)
+km = KMeans(n_clusters=2, n_init=5, random_state=0).fit(X)
+OUT = len(set(km.labels_))
+";
+            var empty = new ArrayList();
+            var result = DSPythonNet3Evaluator.EvaluatePythonScript(code, empty, empty);
+            Assert.That(result, Is.EqualTo(2));
+        }
+
+        [Test]
+        public void TestIfcopenshellAvailable()
+        {
+            string code = @"
+import ifcopenshell
+# Simple smoke: module import + version attribute exists
+OUT = hasattr(ifcopenshell, '__version__')
+";
+            var empty = new ArrayList();
+            var result = DSPythonNet3Evaluator.EvaluatePythonScript(code, empty, empty);
+            Assert.That(result, Is.EqualTo(true));
+        }
+
+        [Test]
+        public void TestTabulateAvailable()
+        {
+            string code = @"
+from tabulate import tabulate
+tbl = tabulate([[1,'a'],[2,'b']], headers=['n','c'], tablefmt='plain')
+# Expect two data rows -> 2 newline characters (plain format produces 2 lines)
+OUT = ('1' in tbl) and ('2' in tbl) and ('a' in tbl) and ('b' in tbl)
+";
+            var empty = new ArrayList();
+            var result = DSPythonNet3Evaluator.EvaluatePythonScript(code, empty, empty);
+            Assert.That(result, Is.EqualTo(true));
+        }
     }
 }