pycharm中執行程序，錯誤官方提示：
OMP: Hint This means that multiple copies of the OpenMP runtime have been linked into the program. That is dangerous, since it can degrade performance or cause incorrect results. The best thing to do is to ensure that only a single OpenMP runtime is linked into the process, e.g. by avoiding static linking of the OpenMP runtime in any library. As an unsafe, unsupported, undocumented workaround you can set the environment variable KMP_DUPLICATE_LIB_OK=TRUE to allow the program to continue to execute, but that may cause crashes or silently produce incorrect results. For more information, please see http://www.intel.com/software/products/support/.
解決辦法：
第一種：搜索anaconda安裝文件夾，
會發現在anoconda安裝路徑和pytorch下存在幾個 libiomp5md.dll，只需要把pytorch下重復的刪除即可，anoconda路徑中保留，把另外一個不在torch庫下的文件備份刪除，保留torch庫下的。
第二種：在代碼中添加下面兩行代碼（在我電腦中，這種方法不可用，在其他環境下有的好用）
import os
os.environ["KMP_DUPLICATE_LIB_OK"]="TRUE"