使用multiprocessing包，demo
#!/usr/bin/python3
import os
import time
import multiprocessing
def drink():
print("drink pid, ppid", os.getpid(), os.getppid())
for i in range(3):
print("drink...")
time.sleep(1)
def eat():
print("eat process pid, ppid", os.getpid(), os.getppid())
for i in range(3):
print("eat...")
time.sleep(1)
if __name__ == '__main__':
drink_process = multiprocessing.Process(target=drink)
eat_process = multiprocessing.Process(target=eat)
print("cpu core num: ", os.cpu_count())
print("main pid ", os.getpid())
drink_process.start()
eat_process.start()
