Python Import Tracing

library/python/runtime/importer.pxi

@@ -241,8 +241,13 @@ class ResourceImporter(object):
         old_mod = sys.modules.get(mod_name, None)
         sys.modules[mod_name] = mod
 
+        # __name__ and __file__ could be overwritten after execution
+        # So these two things are needed if wee want to be consistent at some point
+        initial_modname = mod.__name__
+        initial_filename = mod.__file__
+
         if self._before_import_callback:
-            self._before_import_callback(mod)
+            self._before_import_callback(initial_modname, initial_filename)
 
         try:
             exec code in mod.__dict__
@@ -252,7 +257,7 @@ class ResourceImporter(object):
 
             # "Zero-cost". Just in case import error occurs
             if self._after_import_callback:
-                self._after_import_callback(mod)
+                self._after_import_callback(initial_modname, initial_filename)
 
         # Some hacky modules (e.g. pygments.lexers) replace themselves in
         # `sys.modules` with proxies.

library/python/runtime_py3/importer.pxi

@@ -240,8 +240,13 @@ class ResourceImporter(object):
             module.__path__= [executable + path_sep + module.__name__.replace('.', path_sep)]
         # exec(code, module.__dict__)
 
+        # __name__ and __file__ could be overwritten after execution
+        # So these two things are needed if wee want to be consistent at some point
+        initial_modname = module.__name__
+        initial_filename = module.__file__
+
         if self._before_import_callback:
-            self._before_import_callback(module)
+            self._before_import_callback(initial_modname, initial_filename)
 
         # “Zero-cost” exceptions are implemented.
         # The cost of try statements is almost eliminated when no exception is raised
@@ -249,7 +254,7 @@ class ResourceImporter(object):
             _call_with_frames_removed(exec, code, module.__dict__)
         finally:
             if self._after_import_callback:
-                self._after_import_callback(module)
+                self._after_import_callback(initial_modname, initial_filename)
 
     # PEP-302 extension 1 of 3: data loader.
     def get_data(self, path):