Python Script to run multiple scripts simultaneously

I am trying to run code at the same time in Spyder, that I would have previously ran by opening new consoles and playing each script individually. However, I would like these to run all at the same time. My first .py file sends code to a robot, the second receives almost real time data from the robot and populates a .csv file, and the third .py file plots a live graph based on data on the .csv file.

I have tried using

import subprocess

process1 = subprocess.Popen(["python", "pop.py"]) # Create and launch process pop.py using python interpreter
process2 = subprocess.Popen(["python", "pop1.py"])
process3 = subprocess.Popen(["python", "pop2.py"])

process1.wait() # Wait for process1 to finish (basically wait for script to finish)
process2.wait()
process3.wait()

Run multiple python file concurrently

However, I have no way to stop the .csv file from stopping to receive data, and the third .py file doesn't run, i.e the plot doesn't run.

Thanks for any advice, Lauren