live output from subprocess command

Question

I\'m using a python script as a driver for a hydrodynamics code. When it comes time to run the simulation, I use subprocess.Popen to run the code, collect the

Answer 1

In addition to all these answer, one simple approach could also be as follows:

process = subprocess.Popen(your_command, stdout=subprocess.PIPE)

while process.stdout.readable():
    line = process.stdout.readline()

    if not line:
        break

    print(line.strip())

Loop through the readable stream as long as it's readable and if it gets an empty result, stop.

The key here is that readline() returns a line (with \n at the end) as long as there's an output and empty if it's really at the end.

Hope this helps someone.