this question about dataset and code

Hi,

Thank you for sharing this fantastic work!

I want to implement this code to achieve the segmentation of Brats 2020. However, there is no **obj** in the dataset of the Brats 2020. Therefore, what's the **obj** in the dataset? In addition, If I want to run this program using PyCharm software in Win10, which main function should I run? Thank you for your help a lot. 