Ensure to add an init file

Author: sea-bass

generate_parameter_library_py/generate_parameter_library_py/generate_python_module.py

@@ -48,6 +48,9 @@ def run(output_file, yaml_file, validation_module=''):
     with open(output_file, 'w') as f:
         f.write(code)
 
+    # Put an __init__.py file if one does not yet exist.
+    init_file = os.path.join(os.path.dirname(output_file), '__init__.py')
+    open(init_file, 'a').close()
 
 def parse_args():
     parser = argparse.ArgumentParser()