Create the root folder if it doesn't exist (#226)

* Create the root folder if it doesn't exist

* changelog

* Add a message when the root folder is created

* Improved message

CHANGELOG.md

@@ -4,6 +4,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [Unreleased]
+### Added
+- results - Allow the data saver to create the root folder if it doesn't exist.
+
 ## [0.17.7] - 2024-08-20
 ### Added
 - VoltageGateSequence - The `VoltageGateSequence` class facilitates the creation and management of complex pulse sequences, allowing dynamic voltage control, ramping, and bias compensation across gate elements.

qualang_tools/results/data_handler/data_folder_tools.py

@@ -108,7 +108,11 @@ def get_latest_data_folder(
         root_data_folder = Path(root_data_folder)
 
     if not root_data_folder.exists():
-        raise NotADirectoryError(f"Root data folder {root_data_folder} does not exist.")
+        try:
+            root_data_folder.mkdir(parents=True)
+            print(f"The provided root folder didn't exist, so it was created at '{root_data_folder.absolute()}'.")
+        except (Exception,):
+            raise NotADirectoryError(f"Root data folder {root_data_folder} does not exist.")
 
     if current_folder_pattern is None:
         current_folder_pattern = folder_pattern