Make edits according to Copilot review.

Author: khatchad

com.ibm.wala.cast.python.jython3/source/com/ibm/wala/cast/python/util/Python3Interpreter.java

@@ -1,12 +1,16 @@
 package com.ibm.wala.cast.python.util;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import org.python.core.PyException;
 import org.python.core.PyObject;
 import org.python.core.PySystemState;
 import org.python.util.PythonInterpreter;
 
 public class Python3Interpreter extends com.ibm.wala.cast.python.util.PythonInterpreter {
 
+  private static final Logger LOGGER = Logger.getLogger(Python3Interpreter.class.getName());
+
   private static PythonInterpreter interp;
 
   public static PythonInterpreter getInterp() {
@@ -24,7 +28,8 @@ public Integer evalAsInteger(String expr) {
         return val.asInt();
       }
     } catch (PyException e) {
-
+      LOGGER.log(Level.SEVERE, "Unable to interpret Python expression: " + expr, e);
+      throw new IllegalArgumentException("Can't interpret Python expression: " + expr + ".", e);
     }
 
     return null;