Comment réaliser une exécution parallèle de \'cat | Les commandes zgrep\' utilisant des sous-processus en Python ?

<code class="python">import multiprocessing as mp

class MainProcessor(mp.Process):
    def __init__(self, peaks_array):
        super(MainProcessor, self).__init__()
        self.peaks_array = peaks_array

    def run(self):
        for peak_arr in self.peaks_array:
            peak_processor = PeakProcessor(peak_arr)
            peak_processor.start()

class PeakProcessor(mp.Process):
    def __init__(self, peak_arr):
        super(PeakProcessor, self).__init__()
        self.peak_arr = peak_arr

    def run(self):
        command = 'ssh remote_host cat files_to_process | zgrep --mmap "regex" '
        log_lines = (subprocess.check_output(command, shell=True)).split('\n')
        process_data(log_lines)</code>

<code class="python">from subprocess import Popen
import multiprocessing as mp

class MainProcessor(mp.Process):
    def __init__(self, peaks_array):
        super(MainProcessor, self).__init__()
        self.peaks_array = peaks_array

    def run(self):
        processes = []
        for peak_arr in self.peaks_array:
            command = 'ssh remote_host cat files_to_process | zgrep --mmap "regex" '
            process = Popen(command, shell=True, stdout=PIPE)
            processes.append(process)

        for process in processes:
            log_lines = process.communicate()[0].split('\n')
            process_data(log_lines)</code>