PLFM-3938 Create a code-loading utility in DeciClient (#1393)

* PLFM-3938 Create a code-loading utility in DeciClient

* PLFM-3938 CR

* PLFM-3938 Better

src/super_gradients/common/plugins/deci_client.py

@@ -149,38 +149,46 @@ def get_model_weights(self, model_name: str) -> Optional[str]:
         :return:            model_weights path. None if weights were not found for this specific model on this SG version."""
         return self._get_file(model_name=model_name, file_name=AutoNACFileName.WEIGHTS_PTH)
 
+    @staticmethod
+    def load_code_from_zipfile(*, file: str, target_path: str, package_name: str = "deci_model_code") -> None:
+        """Load additional code files.
+        The zip file is extracted, and code files will be placed in the target_path/package_name and imported dynamically,
+        :param file:            path to zip file to extract code files from.
+        :param target_path:     path to place code files.
+        :param package_name:    name of the package to place code files in."""
+        package_path = os.path.join(target_path, package_name)
+        # create the directory
+        os.makedirs(package_path, exist_ok=True)
+
+        # extract code files
+        with ZipFile(file) as zipfile:
+            zipfile.extractall(package_path)
+
+        # add an init file that imports all code files
+        with open(os.path.join(package_path, "__init__.py"), "w") as init_file:
+            all_str = "\n\n__all__ = ["
+            for code_file in os.listdir(path=package_path):
+                if code_file.endswith(".py") and not code_file.startswith("__init__"):
+                    init_file.write(f'import {code_file.replace(".py", "")}\n')
+                    all_str += f'"{code_file.replace(".py", "")}", '
+
+            all_str += "]\n\n"
+            init_file.write(all_str)
+
+        # include in path and import
+        sys.path.insert(1, package_path)
+        importlib.import_module(package_name)
+
     def download_and_load_model_additional_code(self, model_name: str, target_path: str, package_name: str = "deci_model_code") -> None:
         """
         try to download code files for this model.
         if found, code files will be placed in the target_path/package_name and imported dynamically
         """
 
         file = self._get_file(model_name=model_name, file_name=AutoNACFileName.CODE_ZIP)
-
         package_path = os.path.join(target_path, package_name)
         if file is not None:
-            # crete the directory
-            os.makedirs(package_path, exist_ok=True)
-
-            # extract code files
-            with ZipFile(file) as zipfile:
-                zipfile.extractall(package_path)
-
-            # add an init file that imports all code files
-            with open(os.path.join(package_path, "__init__.py"), "w") as init_file:
-                all_str = "\n\n__all__ = ["
-                for code_file in os.listdir(path=package_path):
-                    if code_file.endswith(".py") and not code_file.startswith("__init__"):
-                        init_file.write(f'import {code_file.replace(".py", "")}\n')
-                        all_str += f'"{code_file.replace(".py", "")}", '
-
-                all_str += "]\n\n"
-                init_file.write(all_str)
-
-            # include in path and import
-            sys.path.insert(1, package_path)
-            importlib.import_module(package_name)
-
+            self.load_code_from_zipfile(file=file, target_path=target_path, package_name=package_name)
             logger.info(
                 f"*** IMPORTANT ***: files required for the model {model_name} were downloaded and added to your code in:\n{package_path}\n"
                 f"These files will be downloaded to the same location each time the model is fetched from the deci-client.\n"