.

src/debugpy/_vendored/pydevd/pydevd_attach_to_process/add_code_to_python_process.py

@@ -261,7 +261,13 @@ def get_target_filename(is_target_process_64=None, prefix=None, extension=None):
 
 def run_python_code_windows(pid, python_code, connect_debugger_tracing=False, show_debug_info=0):
     assert '\'' not in python_code, 'Having a single quote messes with our command.'
-    from winappdbg.process import Process
+
+    # Suppress winappdbg warning about sql package missing.
+    import warnings
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", category=ImportWarning)
+        from winappdbg.process import Process
+
     if not isinstance(python_code, bytes):
         python_code = python_code.encode('utf-8')
 

tests/debug/runners.py

@@ -199,6 +199,7 @@ def attach_pid(session, target, cwd=None, wait=True):
         config["processId"] = session.debuggee.pid
 
     session.spawn_adapter()
+    session.expect_server_socket()
     with session.request_attach():
         yield