How do I find the IP address of each devices on my genymotion network?

I have a test code that works by several devices on genymotion, in one of my test cases I pick just one device and in this part I used the command like this:

command = "adb shell input keyevent 67"
os.system(command)

Here I received an error that said there are more than one devices. How can I fixed it? By the way I don't know how to find which IP is for which devices too that shows by

adb devices

command. Do you have any idea about it?