optimize code structure

run_blender.py

@@ -1,10 +1,10 @@
 
 import os
 import sys
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-sys.path.append("/home/hofee/.local/lib/python3.11/site-packages")
 import yaml
-from blender.data_generator import DataGenerator
+
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+from data_generator import DataGenerator
 
 if __name__ == "__main__":
     config_path = sys.argv[sys.argv.index('--') + 1]