diff --git a/datajob/__init__.py b/datajob/__init__.py
index 930f27b..4dbdbb2 100644
--- a/datajob/__init__.py
+++ b/datajob/__init__.py
@@ -21,5 +21,11 @@
 
 
 def call_subprocess(cmd: str) -> None:
+    """
+    call a command as a subprocess in a secure way.
+    https://stackoverflow.com/a/59090212/1771155
+    :param cmd: the command to execute
+    :return: None
+    """
     print(f"datajob subprocess command: " f"{cmd}")
     subprocess.check_call(shlex.split(cmd))
diff --git a/datajob/package/wheel.py b/datajob/package/wheel.py
index 63cbcc7..554a4e1 100644
--- a/datajob/package/wheel.py
+++ b/datajob/package/wheel.py
@@ -45,7 +45,8 @@ def _poetry_wheel(project_root: str) -> None:
 
 def _execute_packaging_logic(project_root: str, config_file: str, cmd: str) -> None:
     """
-
+    check if the config file exists in the project root and execute the command to
+    create a wheel.
     :param project_root: the path to the root of your project.
     :param config_file: the confgi file to package the project as a wheel (setup.py or pyproject.toml)
     :param cmd: the command to execute to create a wheel.