Python實現多進程共用資料的方法分析，python實現進程共用

Python實現多進程共用資料的方法分析，python實現進程共用

本文執行個體講述了Python實現多進程共用資料的方法。分享給大家供大家參考，具體如下：

樣本一：

# -*- coding:utf-8 -*-from multiprocessing import Process, Managerimport timeimport randomdef kkk(a_list, number):  for i in range(10):    a_list.append(i)    time.sleep(random.randrange(2))    print('這是進程{} {}'.format(number, a_list))  print('這是進程{} {}'.format(number, a_list))def jjj(a_list):  for i in range(2):    process = Process(target=kkk, args=(a_list, i))    process.start()if __name__ == '__main__':  a_list = []  process_0 = Process(target=jjj, args=(a_list,))  process_0.start()  process_0.join()  print(a_list)  print(len(a_list))  print('it\'s ok')

輸出：

這是進程0 [0]這是進程0 [0, 1]這是進程0 [0, 1, 2]這是進程0 [0, 1, 2, 3]這是進程1 [0]這是進程0 [0, 1, 2, 3, 4]這是進程1 [0, 1]這是進程0 [0, 1, 2, 3, 4, 5]這是進程1 [0, 1, 2]這是進程1 [0, 1, 2, 3]這是進程1 [0, 1, 2, 3, 4]這是進程1 [0, 1, 2, 3, 4, 5]這是進程0 [0, 1, 2, 3, 4, 5, 6]這是進程0 [0, 1, 2, 3, 4, 5, 6, 7]這是進程0 [0, 1, 2, 3, 4, 5, 6, 7, 8]這是進程1 [0, 1, 2, 3, 4, 5, 6]這是進程0 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]這是進程0 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]這是進程1 [0, 1, 2, 3, 4, 5, 6, 7]這是進程1 [0, 1, 2, 3, 4, 5, 6, 7, 8]這是進程1 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]這是進程1 [0, 1, 2, 3, 4, 5, 6, 7, 8, 9][]0it's okProcess finished with exit code 0

樣本二：

使用 Manager

# -*- coding:utf-8 -*-from multiprocessing import Process, Managerimport timeimport randomdef kkk(a_list, number):  for i in range(10):    a_list.append(i)    time.sleep(random.randrange(2))    print('這是進程{} {}'.format(number, a_list))  print('這是進程{} {}'.format(number, a_list))def jjj(a_list):  for i in range(2):    process = Process(target=kkk, args=(a_list, i))    process.start()if __name__ == '__main__':  manager = Manager()  a_list = manager.list()  # a_list = []  process_0 = Process(target=jjj, args=(a_list,))  process_0.start()  process_0.join()  print(a_list)  print(len(a_list))  print('it\'s ok')

輸出：

這是進程0 [0, 0]這是進程0 [0, 0, 1]這是進程0 [0, 0, 1, 2]這是進程0 [0, 0, 1, 2, 3]這是進程0 [0, 0, 1, 2, 3, 4]這是進程1 [0, 0, 1, 2, 3, 4, 5]這是進程0 [0, 0, 1, 2, 3, 4, 5, 1]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5]這是進程0 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6]這是進程0 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7]這是進程0 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7]這是進程0 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8]這是進程0 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8, 9]這是進程1 [0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8, 9][0, 0, 1, 2, 3, 4, 5, 1, 6, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8, 9]20it's okProcess finished with exit code 0