将PythonScript作为进程运行并阅读标准输出问题

I am trying to run a python script as a process to which I pass a couple of parameters and then read standard output. I have a little console app and a dummy script that works fine, but when I do the same thing in my WebApi project, Standard Output is always blank, and I cannot figure out why. My code follows: I am trying to run a python script as a process