Opening An .exe And Passing Commands To It Via Python Subprocess?

So I have my .exe program that opens but i want to pass strings to it from my python script. Im opening the exe like this import subprocess p = subprocess.Popen('E:\Work\my.exe', s

Solution 1:

From the Python documentation for Using the subprocess module:

You don’t need shell=True to run a batch file, nor to run a console-based executable.

From the Python documentation for Popen Objects :

Note that if you want to send data to the process’s stdin, you need to create the Popen object with stdin=PIPE. Similarly, to get anything other than None in the result tuple, you need to give stdout=PIPE and/or stderr=PIPE too.

Code example:

from subprocess import Popen, PIPE

p = Popen(r"E:\Work\my.exe", stdin=PIPE)
p.communicate("userInfo")