Number of CPU Cores

If the Python version is later than 2.6, obtain the number of CPUs by using the following module.

The return value of cpu_count is the number of CPUs.

import multiprocessing
multiprocessing.cpu_count()

If the Python version is earlier than 2.6, use the following module to obtain the number of CPUs:

import psutil
psutil.cpu_count()

Python can read the system file /proc/cpuinfo and filter the processor field to collect statistics on the number of cores.

Example:

def get_cpu_info():
        processor_cnt = 0
        cpu_model = ""
        f_cpu_info = open("/proc/cpuinfo")
        try:
                for line in f_cpu_info:
                        if (line.find("processor") == 0):
                                processor_cnt += 1
                print("cpu counts: %s, cpu model: %s" % (processor_cnt))
        finally:
                f_cpu_info.close()