output: generate FileOutput save_file_path property from output_dir a…

…nd output_file_name

codecarbon/emissions_tracker.py

@@ -405,7 +405,7 @@ def _init_output_methods(self, api_key):
         if self._save_to_file:
             self._output_handlers.append(
                 FileOutput(
-                    os.path.join(self._output_dir, self._output_file),
+                    self._output_file,
                     self._output_dir,
                     self._on_csv_write,
                 )

codecarbon/output_methods/file.py

@@ -15,15 +15,16 @@ class FileOutput(BaseOutput):
     Saves experiment artifacts to a file
     """
 
-    def __init__(self, save_file_path: str, output_dir: str, on_csv_write: str = "append"):
+    def __init__(self, output_file_name: str, output_dir: str, on_csv_write: str = "append"):
         if on_csv_write not in {"append", "update"}:
             raise ValueError(
                 f"Unknown `on_csv_write` value: {on_csv_write}"
                 + " (should be one of 'append' or 'update'"
             )
+        self.output_file_name: str = output_file_name
         self.output_dir: str = output_dir
         self.on_csv_write: str = on_csv_write
-        self.save_file_path: str = save_file_path
+        self.save_file_path = os.path.join(self.output_dir, self.output_file_name)
         logger.info(
             f"Saving emissions data to file {os.path.abspath(self.save_file_path)}"
         )