PY-33328 Don't show false settrace warning for Python 2

GitOrigin-RevId: b7ef9da41da2e70e19e2b8ba07d32fd7d7663025

python/helpers/pydev/pydevd_tracing.py

@@ -50,8 +50,8 @@ def _internal_set_trace(tracing_func):
     if TracingFunctionHolder._warn:
         frame = get_frame()
         if frame is not None and frame.f_back is not None:
-            if not frame.f_back.f_code.co_filename.lower().endswith('threading.py'):
-            
+            filename = frame.f_back.f_code.co_filename.lower()
+            if not filename.endswith('threading.py') and not filename.endswith('pydevd_tracing.py'):
                 message = \
                 '\nPYDEV DEBUGGER WARNING:' + \
                 '\nsys.settrace() should not be used when the debugger is being used.' + \

python/testData/debug/test_calling_settrace_warning.py

@@ -0,0 +1,3 @@
+import sys
+
+sys.settrace(None)

python/testSrc/com/jetbrains/env/python/PythonDebuggerTest.java

@@ -2186,4 +2186,22 @@ public class PythonDebuggerTest extends PyEnvTestCase {
       }
     });
   }
+
+  @Test
+  public void testCallingSettraceWarning() {
+    runPythonTest(new PyDebuggerTask("/debug", "test_calling_settrace_warning.py") {
+      @Override
+      public void before() {
+        toggleBreakpoint(getFilePath(getScriptName()), 2);
+      }
+
+      @Override
+      public void testing() throws Exception {
+        waitForPause();
+        resume();
+        waitForTerminate();
+        outputContains("PYDEV DEBUGGER WARNING:\nsys.settrace() should not be used when the debugger is being used.");
+      }
+    });
+  }
 }