python中import时无法识别自己写的包和模块的方法

1，Mark Directory as 选择Source Root

2，

3，

rootpath = str("D:pycharmpythonprojectyuqingdonglixueGNNBiGCN-master")
syspath = sys.path
sys.path = []
sys.path.append(rootpath)
sys.path.extend([rootpath + i for i in os.listdir(rootpath) if i[0] != "."])
sys.path.extend(syspath)