{"id":1046,"date":"2023-03-24T09:47:07","date_gmt":"2023-03-24T01:47:07","guid":{"rendered":""},"modified":"2023-03-24T09:47:07","modified_gmt":"2023-03-24T01:47:07","slug":"Python \u591a\u7ebf\u7a0b","status":"publish","type":"post","link":"https:\/\/bianchenghao6.com\/1046.html","title":{"rendered":"Python \u591a\u7ebf\u7a0b"},"content":{"rendered":"


\n <\/head>
\n <\/p>\n

\n

Python \u591a\u7ebf\u7a0b<\/h1>\n

\u641e\u61c2Python\u7ebf\u7a0b\u521b\u5efa\u3001\u540c\u6b65\u7684\u7528\u6cd5<\/span>\n <\/div>\n

\u4ec0\u4e48\u662f\u7ebf\u7a0b\u548c\u8fdb\u7a0b<\/h2>\n
\n \u8fdb\u7a0b\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u6267\u884c\u7684\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4ee5\u8fdb\u7a0b\u4e3a\u5355\u4f4d\u5206\u914d\u5b58\u50a8\u7a7a\u95f4\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u5730\u5740\u7a7a\u95f4\u3001\u6570\u636e\u6808\u4ee5\u53ca\u5176\u4ed6\u7528\u4e8e\u8ddf\u8e2a\u8fdb\u7a0b\u6267\u884c\u7684\u8f85\u52a9\u6570\u636e\uff0c\u64cd\u4f5c\u7cfb\u7edf\u7ba1\u7406\u6240\u6709\u8fdb\u7a0b\u7684\u6267\u884c\uff0c\u4e3a\u5b83\u4eec\u5408\u7406\u7684\u5206\u914d\u8d44\u6e90\u3002\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7fork\u6216spawn\u7684\u65b9\u5f0f\u6765\u521b\u5efa\u65b0\u7684\u8fdb\u7a0b\u6765\u6267\u884c\u5176\u4ed6\u7684\u4efb\u52a1\uff0c\u4e0d\u8fc7\u65b0\u7684\u8fdb\u7a0b\u4e5f\u6709\u81ea\u5df1\u72ec\u7acb\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u56e0\u6b64\u5fc5\u987b\u901a\u8fc7\u8fdb\u7a0b\u95f4\u901a\u4fe1\u673a\u5236\uff08IPC\uff0cInter-Process Communication\uff09\u6765\u5b9e\u73b0\u6570\u636e\u5171\u4eab\uff0c\u5177\u4f53\u7684\u65b9\u5f0f\u5305\u62ec\u7ba1\u9053\u3001\u4fe1\u53f7\u3001\u5957\u63a5\u5b57\u3001\u5171\u4eab\u5185\u5b58\u533a\u7b49\u3002\n <\/div>\n
\n \u4e00\u4e2a\u8fdb\u7a0b\u8fd8\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u5e76\u53d1\u7684\u6267\u884c\u7ebf\u7d22\uff0c\u7b80\u5355\u7684\u8bf4\u5c31\u662f\u62e5\u6709\u591a\u4e2a\u53ef\u4ee5\u83b7\u5f97CPU\u8c03\u5ea6\u7684\u6267\u884c\u5355\u5143\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u7ebf\u7a0b\u3002\u7531\u4e8e\u7ebf\u7a0b\u5728\u540c\u4e00\u4e2a\u8fdb\u7a0b\u4e0b\uff0c\u5b83\u4eec\u53ef\u4ee5\u5171\u4eab\u76f8\u540c\u7684\u4e0a\u4e0b\u6587\uff0c\u56e0\u6b64\u76f8\u5bf9\u4e8e\u8fdb\u7a0b\u800c\u8a00\uff0c\u7ebf\u7a0b\u95f4\u7684\u4fe1\u606f\u5171\u4eab\u548c\u901a\u4fe1\u66f4\u52a0\u5bb9\u6613\u3002\u5f53\u7136\u5728\u5355\u6838CPU\u7cfb\u7edf\u4e2d\uff0c\u771f\u6b63\u7684\u5e76\u53d1\u662f\u4e0d\u53ef\u80fd\u7684\uff0c\u56e0\u4e3a\u5728\u67d0\u4e2a\u65f6\u523b\u80fd\u591f\u83b7\u5f97CPU\u7684\u53ea\u6709\u552f\u4e00\u7684\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u4e86CPU\u7684\u6267\u884c\u65f6\u95f4\u3002\u4f7f\u7528\u591a\u7ebf\u7a0b\u5b9e\u73b0\u5e76\u53d1\u7f16\u7a0b\u4e3a\u7a0b\u5e8f\u5e26\u6765\u7684\u597d\u5904\u662f\u4e0d\u8a00\u800c\u55bb\u7684\uff0c\u6700\u4e3b\u8981\u7684\u4f53\u73b0\u5728\u63d0\u5347\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6539\u5584\u7528\u6237\u4f53\u9a8c\uff0c\u4eca\u5929\u6211\u4eec\u4f7f\u7528\u7684\u8f6f\u4ef6\u51e0\u4e4e\u90fd\u7528\u5230\u4e86\u591a\u7ebf\u7a0b\u6280\u672f\u3002\n <\/div>\n
\n Python\u65e2\u652f\u6301\u591a\u8fdb\u7a0b\u53c8\u652f\u6301\u591a\u7ebf\u7a0b\uff0c\u56e0\u6b64\u4f7f\u7528Python\u5b9e\u73b0\u5e76\u53d1\u7f16\u7a0b\u4e3b\u8981\u67093\u79cd\u65b9\u5f0f\uff1a\u591a\u8fdb\u7a0b\u3001\u591a\u7ebf\u7a0b\u3001\u591a\u8fdb\u7a0b+\u591a\u7ebf\u7a0b\u3002\n <\/div>\n

Python\u591a\u8fdb\u7a0b<\/h2>\n
\n \u591a\u7ebf\u7a0b\u7c7b\u4f3c\u4e8e\u540c\u65f6\u6267\u884c\u591a\u4e2a\u4e0d\u540c\u7a0b\u5e8f\uff0c\u591a\u7ebf\u7a0b\u8fd0\u884c\u6709\u5982\u4e0b\u4f18\u70b9\uff1a\n <\/div>\n

\u4f7f\u7528\u7ebf\u7a0b\u53ef\u4ee5\u628a\u6267\u884c\u8f83\u6162\u3001\u5360\u636e\u65f6\u95f4\u8f83\u957f\u7684\u4efb\u52a1\u653e\u5230\u540e\u53f0\u5904\u7406\u3002<\/span>
\n \u4e3b\u4efb\u52a1\u6267\u884c\uff0c\u53ef\u4ee5\u901a\u8fc7\u5f02\u6b65\u7ebf\u7a0b\u53ef\u4ee5\u76d1\u63a7\u5904\u7406\u7684\u8fdb\u5ea6\u3002<\/span>
\n \u7a0b\u591a\u7ebf\u7a0b\u76f8\u5f53\u4e8e\u628a\u4e00\u4e2a\u5927\u4efb\u52a1\u62c6\u5206\u6210\u591a\u4e2a\u5b50\u4efb\u52a1\u6267\u884c\uff0c\u5b8c\u6210\u4efb\u52a1\u7684\u65f6\u95f4\u66f4\u77ed\u3002<\/span> <\/p>\n

\n \u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4ed6\u81ea\u5df1\u7684\u4e00\u7ec4CPU\u5bc4\u5b58\u5668\uff0c\u79f0\u4e3a\u7ebf\u7a0b\u7684\u4e0a\u4e0b\u6587\uff0c\u8be5\u4e0a\u4e0b\u6587\u53cd\u6620\u4e86\u7ebf\u7a0b\u4e0a\u6b21\u8fd0\u884c\u8be5\u7ebf\u7a0b\u7684CPU\u5bc4\u5b58\u5668\u7684\u72b6\u6001\u3002\n <\/div>\n

\u7ebf\u7a0b\u53ef\u4ee5\u88ab\u62a2\u5360\uff08\u4e2d\u65ad\uff09\u3002<\/span>
\n \u5728\u5176\u4ed6\u7ebf\u7a0b\u6b63\u5728\u8fd0\u884c\u65f6\uff0c\u7ebf\u7a0b\u53ef\u4ee5\u6682\u65f6\u6401\u7f6e\uff08\u4e5f\u79f0\u4e3a\u7761\u7720\uff09 -- \u8fd9\u5c31\u662f\u7ebf\u7a0b\u7684\u9000\u8ba9\u3002<\/span> <\/p>\n

\n \u7ebf\u7a0b\u53ef\u4ee5\u5206\u4e3a:\n <\/div>\n

\u5185\u6838\u7ebf\u7a0b\uff1a<\/b>\u7531\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u521b\u5efa\u548c\u64a4\u9500\u3002<\/span>
\n \u7528\u6237\u7ebf\u7a0b\uff1a<\/b>\u4e0d\u9700\u8981\u5185\u6838\u652f\u6301\u800c\u5728\u7528\u6237\u7a0b\u5e8f\u4e2d\u5b9e\u73b0\u7684\u7ebf\u7a0b\u3002<\/span> <\/p>\n

\n Python \u7ebf\u7a0b\u4e2d\u5e38\u7528\u7684\u4e24\u4e2a\u6a21\u5757\u4e3a\uff1a\n <\/div>\n

_thread<\/span>
\n threading(\u63a8\u8350\u4f7f\u7528)<\/span> <\/p>\n

\n thread \u6a21\u5757\u5df2\u88ab\u5e9f\u5f03\u3002\u7528\u6237\u53ef\u4ee5\u4f7f\u7528 threading \u6a21\u5757\u4ee3\u66ff\u3002\u6240\u4ee5\uff0c\u5728 Python3 \u4e2d\u4e0d\u80fd\u518d\u4f7f\u7528\"thread\" \u6a21\u5757\u3002\u4e3a\u4e86\u517c\u5bb9\u6027\uff0cPython3 \u5c06 thread \u91cd\u547d\u540d\u4e3a \"_thread\"\u3002\n <\/div>\n
\n Python\u4e2d\u4f7f\u7528\u7ebf\u7a0b\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a\u51fd\u6570\u6216\u7528\u7c7b\u6765\u5305\u88c5\u7ebf\u7a0b\u5bf9\u8c61\u3002
\n
\u51fd\u6570\u5f0f\uff1a\u8c03\u7528 _thread \u6a21\u5757\u4e2d\u7684start_new_thread()\u51fd\u6570\u6765\u4ea7\u751f\u65b0\u7ebf\u7a0b\u3002\u8bed\u6cd5\u5982\u4e0b:\n <\/div>\n
\n
 _thread.start_new_thread ( function, args[, kwargs] ) <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u53c2\u6570\u8bf4\u660e:\n  <\/div>\n
  function - \u7ebf\u7a0b\u51fd\u6570\u3002<\/span>
\n  args - \u4f20\u9012\u7ed9\u7ebf\u7a0b\u51fd\u6570\u7684\u53c2\u6570,\u4ed6\u5fc5\u987b\u662f\u4e2atuple\u7c7b\u578b\u3002<\/span>
\n  kwargs - \u53ef\u9009\u53c2\u6570\u3002<\/span> <\/p>\n
\n
 import <\/span>_thread
 import <\/span>time
 # \u4e3a\u7ebf\u7a0b\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570
<\/span> def <\/span>print_time( threadName, delay):
    count = 0
    while <\/span>count < 5:
       time.sleep(delay)
       count += 1
       print <\/span>(\"%s: %s\"<\/span> % ( threadName, time.ctime(time.time()) ))
 # \u521b\u5efa\u4e24\u4e2a\u7ebf\u7a0b
<\/span> try:
    _thread.start_new_thread( print_time, (\"Thread-1\"<\/span>, 1, ) )
    _thread.start_new_thread( print_time, (\"Thread-2\"<\/span>, 3, ) )
 except:
    print <\/span>(\"Error: \u65e0\u6cd5\u542f\u52a8\u7ebf\u7a0b\"<\/span>)
 while <\/span>1:
    pass
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6267\u884c\u7ed3\u679c\uff1a\n  <\/div>\n
\n
Thread-1: Sun Jul 19 17:39:39 2020
 Thread-1: Sun Jul 19 17:39:40 2020
 Thread-2: Sun Jul 19 17:39:41 2020
 Thread-1: Sun Jul 19 17:39:41 2020
 Thread-1: Sun Jul 19 17:39:42 2020
 Thread-1: Sun Jul 19 17:39:43 2020
 Thread-2: Sun Jul 19 17:39:44 2020
 Thread-2: Sun Jul 19 17:39:47 2020
 Thread-2: Sun Jul 19 17:39:50 2020
 Thread-2: Sun Jul 19 17:39:53 2020<\/span><\/code><\/pre>\n<\/p><\/div>\n
\u7ebf\u7a0b\u6a21\u5757<\/h2>\n
\n    Python3 \u901a\u8fc7\u4e24\u4e2a\u6807\u51c6\u5e93 _thread \u548c threading \u63d0\u4f9b\u5bf9\u7ebf\u7a0b\u7684\u652f\u6301\u3002
\n   
_thread \u63d0\u4f9b\u4e86\u4f4e\u7ea7\u522b\u7684\u3001\u539f\u59cb\u7684\u7ebf\u7a0b\u4ee5\u53ca\u4e00\u4e2a\u7b80\u5355\u7684\u9501\uff0c\u5b83\u76f8\u6bd4\u4e8e threading \u6a21\u5757\u7684\u529f\u80fd\u8fd8\u662f\u6bd4\u8f83\u6709\u9650\u7684\u3002
\n   
threading \u6a21\u5757\u9664\u4e86\u5305\u542b _thread \u6a21\u5757\u4e2d\u7684\u6240\u6709\u65b9\u6cd5\u5916\uff0c\u8fd8\u63d0\u4f9b\u7684\u5176\u4ed6\u65b9\u6cd5\uff1a\n  <\/div>\n
  threading.currentThread(): \u8fd4\u56de\u5f53\u524d\u7684\u7ebf\u7a0b\u53d8\u91cf\u3002<\/span>
\n  threading.enumerate(): \u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u6b63\u5728\u8fd0\u884c\u7684\u7ebf\u7a0b\u7684list\u3002\u6b63\u5728\u8fd0\u884c\u6307\u7ebf\u7a0b\u542f\u52a8\u540e\u3001\u7ed3\u675f\u524d\uff0c\u4e0d\u5305\u62ec\u542f\u52a8\u524d\u548c\u7ec8\u6b62\u540e\u7684\u7ebf\u7a0b\u3002<\/span>
\n  threading.activeCount(): \u8fd4\u56de\u6b63\u5728\u8fd0\u884c\u7684\u7ebf\u7a0b\u6570\u91cf\uff0c\u4e0elen(threading.enumerate())\u6709\u76f8\u540c\u7684\u7ed3\u679c\u3002<\/span> <\/p>\n
\n    \u9664\u4e86\u4f7f\u7528\u65b9\u6cd5\u5916\uff0c\u7ebf\u7a0b\u6a21\u5757\u540c\u6837\u63d0\u4f9b\u4e86Thread\u7c7b\u6765\u5904\u7406\u7ebf\u7a0b\uff0cThread\u7c7b\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u65b9\u6cd5:\n  <\/div>\n
  run(): \u7528\u4ee5\u8868\u793a\u7ebf\u7a0b\u6d3b\u52a8\u7684\u65b9\u6cd5\u3002<\/span>
\n  start():\u542f\u52a8\u7ebf\u7a0b\u6d3b\u52a8\u3002<\/span>
\n  join([time]): \u7b49\u5f85\u81f3\u7ebf\u7a0b\u4e2d\u6b62\u3002\u8fd9\u963b\u585e\u8c03\u7528\u7ebf\u7a0b\u76f4\u81f3\u7ebf\u7a0b\u7684join() \u65b9\u6cd5\u88ab\u8c03\u7528\u4e2d\u6b62-\u6b63\u5e38\u9000\u51fa\u6216\u8005\u629b\u51fa\u672a\u5904\u7406\u7684\u5f02\u5e38-\u6216\u8005\u662f\u53ef\u9009\u7684\u8d85\u65f6\u53d1\u751f\u3002<\/span>
\n  isAlive(): \u8fd4\u56de\u7ebf\u7a0b\u662f\u5426\u6d3b\u52a8\u7684\u3002<\/span>
\n  getName(): \u8fd4\u56de\u7ebf\u7a0b\u540d\u3002<\/span>
\n  setName(): \u8bbe\u7f6e\u7ebf\u7a0b\u540d\u3002<\/span> <\/p>\n
\u4f7f\u7528 threading \u6a21\u5757\u521b\u5efa\u7ebf\u7a0b<\/h2>\n
\n
 import <\/span>threading
 import <\/span>time
 exitFlag = 0
 class <\/span>myThread (threading.Thread):
     def <\/span>__init__(self, threadID, name, counter):
         threading.Thread.__init__(self)
         self.threadID = threadID
         self.name = name
         self.counter = counter
     def <\/span>run(self):
         print <\/span>(\"\u5f00\u59cb\u7ebf\u7a0b\uff1a\"<\/span> + self.name)
         print_time(self.name, self.counter, 5)
         print <\/span>(\"\u9000\u51fa\u7ebf\u7a0b\uff1a\"<\/span> + self.name)
 def <\/span>print_time(threadName, delay, counter):
     while <\/span>counter:
         if <\/span>exitFlag:
             threadName.exit()
         time.sleep(delay)
         print <\/span>(\"%s: %s\"<\/span> % (threadName, time.ctime(time.time())))
         counter -= 1
 # \u521b\u5efa\u65b0\u7ebf\u7a0b
<\/span> thread1 = myThread(1, \"Thread-1\"<\/span>, 1)
 thread2 = myThread(2, \"Thread-2\"<\/span>, 2)
 # \u5f00\u542f\u65b0\u7ebf\u7a0b
<\/span> thread1.start()
 thread2.start()
 thread1.join()
 thread2.join()
 print <\/span>(\"\u9000\u51fa\u4e3b\u7ebf\u7a0b\"<\/span>)
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6267\u884c\u7ed3\u679c\uff1a\n  <\/div>\n
\n
 \u5f00\u59cb\u7ebf\u7a0b\uff1aThread-1
 \u5f00\u59cb\u7ebf\u7a0b\uff1aThread-2
 Thread-1: Sun Jul 19 17:46:04 2020
 Thread-2: Sun Jul 19 17:46:05 2020
 Thread-1: Sun Jul 19 17:46:05 2020
 Thread-1: Sun Jul 19 17:46:06 2020
 Thread-2: Sun Jul 19 17:46:07 2020
 Thread-1: Sun Jul 19 17:46:07 2020
 Thread-1: Sun Jul 19 17:46:08 2020
 \u9000\u51fa\u7ebf\u7a0b\uff1aThread-1
 Thread-2: Sun Jul 19 17:46:09 2020
 Thread-2: Sun Jul 19 17:46:11 2020
 Thread-2: Sun Jul 19 17:46:13 2020
 \u9000\u51fa\u7ebf\u7a0b\uff1aThread-2
 \u9000\u51fa\u4e3b\u7ebf\u7a0b <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u7ebf\u7a0b\u540c\u6b65<\/h2>\n
\n    \u5982\u679c\u591a\u4e2a\u7ebf\u7a0b\u5171\u540c\u5bf9\u67d0\u4e2a\u6570\u636e\u4fee\u6539\uff0c\u5219\u53ef\u80fd\u51fa\u73b0\u4e0d\u53ef\u9884\u6599\u7684\u7ed3\u679c\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u6b63\u786e\u6027\uff0c\u9700\u8981\u5bf9\u591a\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u540c\u6b65\u3002\u4f7f\u7528 Thread \u5bf9\u8c61\u7684 Lock \u548c Rlock \u53ef\u4ee5\u5b9e\u73b0\u7b80\u5355\u7684\u7ebf\u7a0b\u540c\u6b65\uff0c\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u90fd\u6709
\n    acquire<\/span> \u65b9\u6cd5\u548c
\n   release<\/span> \u65b9\u6cd5\uff0c\u5bf9\u4e8e\u90a3\u4e9b\u9700\u8981\u6bcf\u6b21\u53ea\u5141\u8bb8\u4e00\u4e2a\u7ebf\u7a0b\u64cd\u4f5c\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u5c06\u5176\u64cd\u4f5c\u653e\u5230
\n   acquire<\/span> \u548c
\n   release<\/span> \u65b9\u6cd5\u4e4b\u95f4\u3002\u5982\u4e0b\uff1a\n  <\/div>\n
\n    \u591a\u7ebf\u7a0b\u7684\u4f18\u52bf\u5728\u4e8e\u53ef\u4ee5\u540c\u65f6\u8fd0\u884c\u591a\u4e2a\u4efb\u52a1\uff08\u81f3\u5c11\u611f\u89c9\u8d77\u6765\u662f\u8fd9\u6837\uff09\u3002\u4f46\u662f\u5f53\u7ebf\u7a0b\u9700\u8981\u5171\u4eab\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u5b58\u5728\u6570\u636e\u4e0d\u540c\u6b65\u7684\u95ee\u9898\u3002
\n   
 
\n   \u8003\u8651\u8fd9\u6837\u4e00\u79cd\u60c5\u51b5\uff1a\u4e00\u4e2a\u5217\u8868\u91cc\u6240\u6709\u5143\u7d20\u90fd\u662f0\uff0c\u7ebf\u7a0b\"set\"\u4ece\u540e\u5411\u524d\u628a\u6240\u6709\u5143\u7d20\u6539\u62101\uff0c\u800c\u7ebf\u7a0b\"print\"\u8d1f\u8d23\u4ece\u524d\u5f80\u540e\u8bfb\u53d6\u5217\u8868\u5e76\u6253\u5370\u3002
\u90a3\u4e48\uff0c\u53ef\u80fd\u7ebf\u7a0b\"set\"\u5f00\u59cb\u6539\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b\"print\"\u4fbf\u6765\u6253\u5370\u5217\u8868\u4e86\uff0c\u8f93\u51fa\u5c31\u6210\u4e86\u4e00\u534a0\u4e00\u534a1\uff0c\u8fd9\u5c31\u662f\u6570\u636e\u7684\u4e0d\u540c\u6b65\u3002<\/span>\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u5f15\u5165\u4e86\u9501\u7684\u6982\u5ff5\u3002\n  <\/div>\n
\n    \u9501\u6709\u4e24\u79cd\u72b6\u6001\u2014\u2014\u9501\u5b9a\u548c\u672a\u9501\u5b9a\u3002\u6bcf\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u6bd4\u5982\"set\"\u8981\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u65f6\uff0c\u5fc5\u987b\u5148\u83b7\u5f97\u9501\u5b9a\uff1b\u5982\u679c\u5df2\u7ecf\u6709\u522b\u7684\u7ebf\u7a0b\u6bd4\u5982\"print\"\u83b7\u5f97\u9501\u5b9a\u4e86\uff0c\u90a3\u4e48\u5c31\u8ba9\u7ebf\u7a0b\"set\"\u6682\u505c\uff0c\u4e5f\u5c31\u662f\u540c\u6b65\u963b\u585e\uff1b\u7b49\u5230\u7ebf\u7a0b\"print\"\u8bbf\u95ee\u5b8c\u6bd5\uff0c\u91ca\u653e\u9501\u4ee5\u540e\uff0c\u518d\u8ba9\u7ebf\u7a0b\"set\"\u7ee7\u7eed\u3002\n  <\/div>\n
\n    \u7ecf\u8fc7\u8fd9\u6837\u7684\u5904\u7406\uff0c\u6253\u5370\u5217\u8868\u65f6\u8981\u4e48\u5168\u90e8\u8f93\u51fa0\uff0c\u8981\u4e48\u5168\u90e8\u8f93\u51fa1\uff0c\u4e0d\u4f1a\u518d\u51fa\u73b0\u4e00\u534a0\u4e00\u534a1\u7684\u5c34\u5c2c\u573a\u9762\u3002\n  <\/div>\n
\n
 import <\/span>threading
 import <\/span>time
 class <\/span>myThread (threading.Thread):
     def <\/span>__init__(self, threadID, name, counter):
         threading.Thread.__init__(self)
         self.threadID = threadID
         self.name = name
         self.counter = counter
     def <\/span>run(self):
         print <\/span>(\"\u5f00\u542f\u7ebf\u7a0b\uff1a \"<\/span> + self.name)
         # \u83b7\u53d6\u9501\uff0c\u7528\u4e8e\u7ebf\u7a0b\u540c\u6b65
<\/span>         threadLock.acquire()
         print_time(self.name, self.counter, 3)
         # \u91ca\u653e\u9501\uff0c\u5f00\u542f\u4e0b\u4e00\u4e2a\u7ebf\u7a0b
<\/span>         threadLock.release()
 def <\/span>print_time(threadName, delay, counter):
     while <\/span>counter:
         time.sleep(delay)
         print <\/span>(\"%s: %s\"<\/span> % (threadName, time.ctime(time.time())))
         counter -= 1
 threadLock = threading.Lock()
 threads = []
 # \u521b\u5efa\u65b0\u7ebf\u7a0b
<\/span> thread1 = myThread(1, \"Thread-1\"<\/span>, 1)
 thread2 = myThread(2, \"Thread-2\"<\/span>, 2)
 # \u5f00\u542f\u65b0\u7ebf\u7a0b
<\/span> thread1.start()
 thread2.start()
 # \u6dfb\u52a0\u7ebf\u7a0b\u5230\u7ebf\u7a0b\u5217\u8868
<\/span> threads.append(thread1)
 threads.append(thread2)
 # \u7b49\u5f85\u6240\u6709\u7ebf\u7a0b\u5b8c\u6210
<\/span> for <\/span><\/span>t in <\/span>threads:
     t.join()
 print <\/span>(\"\u9000\u51fa\u4e3b\u7ebf\u7a0b\"<\/span>)
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6267\u884c\u7ed3\u679c\uff1a\n  <\/div>\n
\n
 \u5f00\u542f\u7ebf\u7a0b\uff1a Thread-1
 \u5f00\u542f\u7ebf\u7a0b\uff1a Thread-2
 Thread-1: Sun Jul 19 17:52:03 2020
 Thread-1: Sun Jul 19 17:52:04 2020
 Thread-1: Sun Jul 19 17:52:05 2020
 Thread-2: Sun Jul 19 17:52:07 2020
 Thread-2: Sun Jul 19 17:52:09 2020
 Thread-2: Sun Jul 19 17:52:11 2020
 \u9000\u51fa\u4e3b\u7ebf\u7a0b <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u7ebf\u7a0b\u4f18\u5148\u7ea7\u961f\u5217\uff08 Queue\uff09<\/h2>\n
\n    Python \u7684 Queue \u6a21\u5757\u4e2d\u63d0\u4f9b\u4e86\u540c\u6b65\u7684\u3001\u7ebf\u7a0b\u5b89\u5168\u7684\u961f\u5217\u7c7b\uff0c\u5305\u62ecFIFO\uff08\u5148\u5165\u5148\u51fa)\u961f\u5217Queue\uff0cLIFO\uff08\u540e\u5165\u5148\u51fa\uff09\u961f\u5217LifoQueue\uff0c\u548c\u4f18\u5148\u7ea7\u961f\u5217 PriorityQueue\u3002
\n   
\u8fd9\u4e9b\u961f\u5217\u90fd\u5b9e\u73b0\u4e86\u9501\u539f\u8bed\uff0c\u80fd\u591f\u5728\u591a\u7ebf\u7a0b\u4e2d\u76f4\u63a5\u4f7f\u7528\uff0c\u53ef\u4ee5\u4f7f\u7528\u961f\u5217\u6765\u5b9e\u73b0\u7ebf\u7a0b\u95f4\u7684\u540c\u6b65\u3002Queue \u6a21\u5757\u4e2d\u7684\u5e38\u7528\u65b9\u6cd5:\n  <\/div>\n
  Queue.qsize()<\/span> \u8fd4\u56de\u961f\u5217\u7684\u5927\u5c0f\u3002<\/span>
\n  Queue.empty()<\/span> \u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0c\u8fd4\u56deTrue,\u53cd\u4e4bFalse\u3002<\/span>
\n  Queue.full()<\/span> \u5982\u679c\u961f\u5217\u6ee1\u4e86\uff0c\u8fd4\u56deTrue,\u53cd\u4e4bFalse\u3002<\/span>
\n  Queue.full<\/span> \u4e0e maxsize \u5927\u5c0f\u5bf9\u5e94\u3002<\/span>
\n  Queue.get([block[, timeout]])<\/span> \u83b7\u53d6\u961f\u5217\uff0ctimeout\u7b49\u5f85\u65f6\u95f4\u3002<\/span>
\n  Queue.get_nowait()<\/span> \u76f8\u5f53Queue.get(False)\u3002<\/span>
\n  Queue.put(item)<\/span> \u5199\u5165\u961f\u5217\uff0ctimeout\u7b49\u5f85\u65f6\u95f4\u3002<\/span>
\n  Queue.put_nowait(item)<\/span> \u76f8\u5f53Queue.put(item, False)\u3002<\/span>
\n  Queue.task_done()<\/span> \u5728\u5b8c\u6210\u4e00\u9879\u5de5\u4f5c\u4e4b\u540e\uff0cQueue.task_done()\u51fd\u6570\u5411\u4efb\u52a1\u5df2\u7ecf\u5b8c\u6210\u7684\u961f\u5217\u53d1\u9001\u4e00\u4e2a\u4fe1\u53f7\u3002<\/span>
\n  Queue.join()<\/span> \u5b9e\u9645\u4e0a\u610f\u5473\u7740\u7b49\u5230\u961f\u5217\u4e3a\u7a7a\uff0c\u518d\u6267\u884c\u522b\u7684\u64cd\u4f5c\u3002<\/span> <\/p>\n
\n
 import <\/span>threading
 import <\/span>time
 class <\/span>myThread (threading.Thread):
     def <\/span>__init__(self, threadID, name, counter):
         threading.Thread.__init__<\/span>(self)
         self.threadID = threadID
         self.name = name
         self.counter = counter
     def <\/span>run(self):
         print <\/span>(\"\u5f00\u542f\u7ebf\u7a0b\uff1a \"<\/span> + self.name)
         # \u83b7\u53d6\u9501\uff0c\u7528\u4e8e\u7ebf\u7a0b\u540c\u6b65
<\/span>         threadLock.acquire<\/span>()
         print_time(self.name, self.counter, 3)
         # \u91ca\u653e\u9501\uff0c\u5f00\u542f\u4e0b\u4e00\u4e2a\u7ebf\u7a0b
<\/span>         threadLock.release<\/span>()
 def <\/span>print_time(threadName, delay, counter):
     while <\/span>counter:
         time.sleep<\/span>(delay)
         print <\/span>(\"%s: %s\"<\/span> % (threadName, time.ctime<\/span>(time.time<\/span>())))
         counter -= 1
 threadLock = threading.Lock<\/span>()
 threads = []
 # \u521b\u5efa\u65b0\u7ebf\u7a0b
<\/span> thread1 = myThread(1, \"Thread-1\"<\/span>, 1)
 thread2 = myThread(2, \"Thread-2\"<\/span>, 2)
 # \u5f00\u542f\u65b0\u7ebf\u7a0b
<\/span> thread1.start<\/span>()
 thread2.start<\/span>()
 # \u6dfb\u52a0\u7ebf\u7a0b\u5230\u7ebf\u7a0b\u5217\u8868
<\/span> threads.append<\/span>(thread1)
 threads.append<\/span>(thread2)
 # \u7b49\u5f85\u6240\u6709\u7ebf\u7a0b\u5b8c\u6210
<\/span> for <\/span><\/span>t in <\/span>threads:
     t.join<\/span>()
 print <\/span>(\"\u9000\u51fa\u4e3b\u7ebf\u7a0b\"<\/span>)
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6267\u884c\u7ed3\u679c\uff1a\n  <\/div>\n
\n
 \u5f00\u542f\u7ebf\u7a0b\uff1aThread-1
 \u5f00\u542f\u7ebf\u7a0b\uff1aThread-2
 \u5f00\u542f\u7ebf\u7a0b\uff1aThread-3
 Thread-3 processing One
 Thread-2 processing Two
 Thread-1 processing Three
 Thread-3 processing Four
 Thread-1 processing Five
 \u9000\u51fa\u7ebf\u7a0b\uff1aThread-3
 \u9000\u51fa\u7ebf\u7a0b\uff1aThread-2
 \u9000\u51fa\u7ebf\u7a0b\uff1aThread-1
 \u9000\u51fa\u4e3b\u7ebf\u7a0b <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u591a\u8fdb\u7a0b-\u5206\u800c\u6cbb\u4e4b\u3002<\/h2>\n
\n    \u6211\u4eec\u6765\u5b8c\u62101~100000000\u6c42\u548c\u7684\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1\uff0c\u8fd9\u4e2a\u95ee\u9898\u672c\u8eab\u975e\u5e38\u7b80\u5355\uff0c\u6709\u70b9\u5faa\u73af\u7684\u77e5\u8bc6\u5c31\u80fd\u89e3\u51b3\uff0c\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002\n  <\/div>\n
\n
 from <\/span>time import <\/span>time
 def <\/span>main():
     total = 0
     number_list = [x for <\/span><\/span>x in <\/span>range(1, 100000001)]
     start = time()
     for <\/span><\/span>number in <\/span>number_list:
         total += number
     print(total)
     end = time()
     print('Execution time: %.3fs'<\/span> % <\/span>(end - start))
 if <\/span>__name__ == '__main__'<\/span>:
     main()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6267\u884c\u7ed3\u679c\uff1a\n  <\/div>\n
\n
 5000000050000000
Execution time: 12.869s <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u6545\u610f\u5148\u53bb\u521b\u5efa\u4e86\u4e00\u4e2a\u5217\u8868\u5bb9\u5668\u7136\u540e\u586b\u5165\u4e86100000000\u4e2a\u6570\uff0c\u8fd9\u4e00\u6b65\u5176\u5b9e\u662f\u6bd4\u8f83\u8017\u65f6\u95f4\u7684\uff0c\u6240\u4ee5\u4e3a\u4e86\u516c\u5e73\u8d77\u89c1\uff0c\u5f53\u6211\u4eec\u5c06\u8fd9\u4e2a\u4efb\u52a1\u5206\u89e3\u52308\u4e2a\u8fdb\u7a0b\u4e2d\u53bb\u6267\u884c\u7684\u65f6\u5019\uff0c\u6211\u4eec\u6682\u65f6\u4e5f\u4e0d\u8003\u8651\u5217\u8868\u5207\u7247\u64cd\u4f5c\u82b1\u8d39\u7684\u65f6\u95f4\uff0c\u53ea\u662f\u628a\u505a\u8fd0\u7b97\u548c\u5408\u5e76\u8fd0\u7b97\u7ed3\u679c\u7684\u65f6\u95f4\u7edf\u8ba1\u51fa\u6765\uff0c\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002\n  <\/div>\n
\n
 from <\/span>multiprocessing import <\/span>Process, Queue
 from <\/span>random import <\/span>randint
 from <\/span>time import <\/span>time
 def <\/span>task_handler(curr_list, result_queue):
     total = 0
     for <\/span><\/span>number in <\/span>curr_list:
         total += number
     result_queue.put<\/span>(total)
 def <\/span>main():
     processes = []
     number_list = [x for <\/span><\/span>x in <\/span>range(1, 100000001)]
     result_queue = Queue()
     index = 0
     # \u542f\u52a88\u4e2a\u8fdb\u7a0b\u5c06\u6570\u636e\u5207\u7247\u540e\u8fdb\u884c\u8fd0\u7b97
<\/span>     for <\/span><\/span>_ in <\/span>range(8):
         p = Process(target<\/span>=task_handler,
                     args=(number_list[index:index + 12500000], result_queue))
         index += 12500000
         processes.append<\/span>(p)
         p.start<\/span>()
     # \u5f00\u59cb\u8bb0\u5f55\u6240\u6709\u8fdb\u7a0b\u6267\u884c\u5b8c\u6210\u82b1\u8d39\u7684\u65f6\u95f4
<\/span>     start = time()
     for <\/span><\/span>p in <\/span>processes:
         p.join<\/span>()
     # \u5408\u5e76\u6267\u884c\u7ed3\u679c
<\/span>     total = 0
     while <\/span>not <\/span>result_queue.empty<\/span>():
         total += result_queue.get()
     print(total)
     end = time()
     print('Execution time: '<\/span>, (end - start), 's'<\/span>, sep=''<\/span>)
 if <\/span>__name__ == '__main__'<\/span>:
     main()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6267\u884c\u7ed3\u679c\uff1a\n  <\/div>\n
\n
 5000000050000000
Execution time: 1.1408379077911377s <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u6bd4\u8f83\u4e24\u6bb5\u4ee3\u7801\u7684\u6267\u884c\u7ed3\u679c\uff0c\u4f7f\u7528\u591a\u8fdb\u7a0b\u540e\u7531\u4e8e\u83b7\u5f97\u4e86\u66f4\u591a\u7684CPU\u6267\u884c\u65f6\u95f4\u4ee5\u53ca\u66f4\u597d\u7684\u5229\u7528\u4e86CPU\u7684\u591a\u6838\u7279\u6027\uff0c\u660e\u663e\u7684\u51cf\u5c11\u4e86\u7a0b\u5e8f\u7684\u6267\u884c\u65f6\u95f4\uff0c\u800c\u4e14\u8ba1\u7b97\u91cf\u8d8a\u5927\u6548\u679c\u8d8a\u660e\u663e\u3002\n  <\/div>\n
 <\/body>
\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Python \u591a\u7ebf\u7a0bzh-cn","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[126],"tags":[],"class_list":["post-1046","post","type-post","status-publish","format-standard","hentry","category-python3"],"_links":{"self":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/1046"}],"collection":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/comments?post=1046"}],"version-history":[{"count":0,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/1046\/revisions"}],"wp:attachment":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/media?parent=1046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/categories?post=1046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/tags?post=1046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}