label_name = os.path.join(self.args.label_save_path + self.args.weight_path.split('run/')[1], IndexError: list index out of range

This error occurs because the split() method used on self.args.weight_path returns an empty list, meaning that there is no string in the path that matches the separator 'run/'. As a result, when trying to access the second element of this list (which doesn't exist), the IndexError is raised.

To fix this error, you need to make sure that the separator used by the split() method matches the structure of your file path. For example, if the weight_path looks like "path/to/weights/run/weightfile.pth", you should split it using 'run/' as the separator:

label_name = os.path.join(self.args.label_save_path, self.args.weight_path.split('run/')[1])

Alternatively, you can add some error handling to check if the split() method returns an empty list, and handle this case accordingly:

split_path = self.args.weight_path.split('run/')
if len(split_path) < 2:
    print("Error: Invalid weight_path format")
    # Handle the error here
else:
    label_name = os.path.join(self.args.label_save_path, split_path[1])