Python non blocking subprocess output

non_blocking_subprocess_output.py

# this function allows outputting the subprocess output to the console without blocking the execution of the program by
# assigning the printing function to a thread
def run_command(self, command):

  p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

  def readstdout():
      for line in p.stdout:
          print(line.strip())

  # Prefer using readstdout without parentheses (readstdout and not readstdout()). In the second case,
  # readstdout() is immediately executed, and its result is passed to the thread before the thread is created.
  thread = Thread(target=readstdout)

  # Start the threads to capture and print the subprocess output
  thread.start()