Error #15: Initializing libiomp5.dylib, but found libiomp5.dylib already initialized.

运行某程序提示如下错误:

OMP: Error #15: Initializing libomp.dylib, but found libiomp5.dylib already initialized.
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://openmp.llvm.org/

解决方法总结如下:

1. 如果是在 IDE 下运行, 大概需要在 .py 文件开头加入

import os
os.environ["KMP_DUPLICATE_LIB_OK"]="TRUE"

并且需要注意将这两条语句放在 .py 文件的开头.

2. 如果是在 terminal 中直接 python file.py 这种形式, 需要在终端的环境下输入 export KMP_DUPLICATE_LIB_OK=TRUE 并回车 (注意 export 不能省略).