import os
import sysconfig


def set_torch():
    torch_path = os.path.join(sysconfig.get_paths()["purelib"], f"torch{os.sep}lib")
    paths = os.environ.get("PATH", "")
    if os.path.exists(torch_path):
        print(f"torch found: {torch_path}")
        if torch_path in paths:
            print("torch already set")
        else:
            print("run:")
            os.environ["PATH"] = paths + os.pathsep + torch_path + os.pathsep
            print(f"set Path={paths + os.pathsep + torch_path + os.pathsep}")
    else:
        print("torch not found")


def torch_gc():
    import torch

    if torch.cuda.is_available():
        with torch.cuda.device(0):
            torch.cuda.empty_cache()
            torch.cuda.ipc_collect()