import os

def fix_basicsr_import():
    file_path = os.path.join(os.path.dirname(os.__file__), 'site-packages/basicsr/data/degradations.py')

    if os.path.exists(file_path):
        with open(file_path, "r") as file:
            data = file.read()

        data = data.replace("from torchvision.transforms.functional_tensor import rgb_to_grayscale",
                            "from torchvision.transforms.functional import rgb_to_grayscale")

        with open(file_path, "w") as file:
            file.write(data)

        print("Fixed basicsr import issue.")
    else:
        print(f"File {file_path} does not exist. Please check the path.")

fix_basicsr_import()