将环境传递给父级的python shell脚本执行(python shell script execution that passes environment to the parent)

 所以我知道subprocess如何工作并使用它很多，但我遇到了一个奇怪的问题。 我需要执行一些环境变量的导出。 原因是某些程序（黑盒）执行的程序似乎在子shell中运行，因此它无法访问环境变量，但它可以访问我的所有文件。 
 
 我不能硬编码环境变量，所以我想要source或. 包含export命令的文件。 但是，如果我source或. 在子进程中的该文件，它不会对其父进程产生任何影响。 在这种情况下，除了subprocess之外，我还需要一些能够执行shell命令而不创建子进程的函数（如果存在）。 另一个问题是子进程没有读取文件的适当权限。 
 
 并且通过os复制环境变量也是不可能的。 
 
 除了subprocess之外还有什么吗？ 或者还有其他一些解决方法吗？ 

So I know how subprocess works and use it a lot, but I've run into a strange issue. I need to execute an export of some environment variables. The reason is that some program (black-box) executes a program that seems like it runs in a subshell, so it doesn't have access to the environment variables but it has access to all my files. 
 
I can't hard code the environment variables so I want to source or . the file that has the export commands in it. However, if I source or . that file in a subprocess, it won't make any difference to its parent process. In which case I either need some function besides subprocess that can execute shell commands without creating a subprocess, if that exists. Another issue is that a subprocess doesn't have the proper permissions to read the file. 
 
And copying the environment variables via os isn't really possible either.
 
Does anything besides subprocess exist? Or is there some other kind of workaround?

原文：https://stackoverflow.com/questions/42017394