Fix fstrings in examples, add alternate map attr access

Author: r41k0u

examples/struct_and_perf.py

@@ -28,8 +28,8 @@ def hello(ctx: c_void_p) -> c_int32:
     dataobj.ts = ktime()
     # dataobj.comm = strobj
     print(
-        f"clone called at {dataobj.ts} by pid {
-            dataobj.pid}, comm {strobj} at time {ts}"
+        f"clone called at {dataobj.ts} by pid"
+        f"{dataobj.pid}, comm {strobj}"
     )
     events.output(dataobj)
     return c_int32(0)

pythonbpf/helper/bpf_helper_handler.py

@@ -255,11 +255,14 @@ def invoke_helper(method_name, map_ptr=None):
     elif isinstance(call.func, ast.Attribute):
         method_name = call.func.attr
         value = call.func.value
-
+        print(f"Handling method call: {ast.dump(call.func)}")
         # Get map pointer from different styles of map access
         if isinstance(value, ast.Call) and isinstance(value.func, ast.Name):
-            # Variable style: my_map.lookup(key)
+            # Func style: my_map().lookup(key)
             map_name = value.func.id
+        elif isinstance(value, ast.Name):
+            # Direct style: my_map.lookup(key)
+            map_name = value.id
         else:
             raise NotImplementedError(
                 f"Unsupported map access pattern: {ast.dump(value)}")