{"id":996451,"date":"2024-12-27T09:15:01","date_gmt":"2024-12-27T01:15:01","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/996451.html"},"modified":"2024-12-27T09:15:04","modified_gmt":"2024-12-27T01:15:04","slug":"python%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%a4%9a%e8%bf%9b%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/996451.html","title":{"rendered":"python\u5982\u4f55\u5b9e\u73b0\u591a\u8fdb\u7a0b"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25072702\/5c542264-01bb-48dc-9f6c-47cd0e7c3eea.webp\" alt=\"python\u5982\u4f55\u5b9e\u73b0\u591a\u8fdb\u7a0b\" \/><\/p>\n<p><p> \u5728Python\u4e2d\u5b9e\u73b0\u591a\u8fdb\u7a0b\u7684\u4e3b\u8981\u65b9\u5f0f\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\u4f7f\u7528<code>multiprocessing<\/code>\u6a21\u5757\u3001\u5229\u7528<code>concurrent.futures<\/code>\u6a21\u5757\u3001\u901a\u8fc7<code>subprocess<\/code>\u6a21\u5757\u6765\u8c03\u7528\u5916\u90e8\u7a0b\u5e8f\u3002<strong><code>multiprocessing<\/code>\u6a21\u5757\u3001<code>concurrent.futures<\/code>\u6a21\u5757\u3001<code>subprocess<\/code>\u6a21\u5757<\/strong>\u662f\u5e38\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u6a21\u5757\u6765\u5b9e\u73b0\u591a\u8fdb\u7a0b\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001<code>MULTIPROCESSING<\/code>\u6a21\u5757<\/h3>\n<\/p>\n<p><p>Python\u7684<code>multiprocessing<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u4e14\u5f3a\u5927\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u591a\u8fdb\u7a0b\u3002\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u521b\u5efa\u8fdb\u7a0b\uff0c\u5e76\u4e14\u63d0\u4f9b\u4e86\u8fdb\u7a0b\u4e4b\u95f4\u7684\u901a\u4fe1\u5de5\u5177\u3002<\/p>\n<\/p>\n<p><h4>1.1 \u521b\u5efa\u8fdb\u7a0b<\/h4>\n<\/p>\n<p><p>\u5728<code>multiprocessing<\/code>\u6a21\u5757\u4e2d\uff0c\u6700\u57fa\u672c\u7684\u529f\u80fd\u662f\u521b\u5efa\u65b0\u7684\u8fdb\u7a0b\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa<code>Process<\/code>\u5bf9\u8c61\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process<\/p>\n<p>def worker():<\/p>\n<p>    print(&quot;This is a worker process.&quot;)<\/p>\n<p>if __name__ == &#39;__m<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>n__&#39;:<\/p>\n<p>    process = Process(target=worker)<\/p>\n<p>    process.start()<\/p>\n<p>    process.join()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Process<\/code>\u5bf9\u8c61\u7528\u4e8e\u542f\u52a8\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\uff0c\u6267\u884c<code>worker<\/code>\u51fd\u6570\u3002<code>start()<\/code>\u65b9\u6cd5\u7528\u4e8e\u542f\u52a8\u8fdb\u7a0b\uff0c\u800c<code>join()<\/code>\u65b9\u6cd5\u7528\u4e8e\u7b49\u5f85\u8fdb\u7a0b\u6267\u884c\u5b8c\u6210\u3002<\/p>\n<\/p>\n<p><h4>1.2 \u8fdb\u7a0b\u6c60<\/h4>\n<\/p>\n<p><p>\u8fdb\u7a0b\u6c60\uff08Pool\uff09\u5141\u8bb8\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u8fdb\u7a0b\u7684\u96c6\u5408\uff0c\u5e76\u5c06\u4efb\u52a1\u5206\u914d\u7ed9\u8fd9\u4e9b\u8fdb\u7a0b\u3002\u901a\u8fc7\u4f7f\u7528\u8fdb\u7a0b\u6c60\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u7ba1\u7406\u548c\u8c03\u5ea6\u591a\u4e2a\u8fdb\u7a0b\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Pool<\/p>\n<p>def square(x):<\/p>\n<p>    return x * x<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    with Pool(4) as p:<\/p>\n<p>        result = p.map(square, [1, 2, 3, 4, 5])<\/p>\n<p>    print(result)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Pool<\/code>\u5bf9\u8c61\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b4\u4e2a\u8fdb\u7a0b\u7684\u8fdb\u7a0b\u6c60\uff0c\u5e76\u4f7f\u7528<code>map<\/code>\u65b9\u6cd5\u5c06<code>square<\/code>\u51fd\u6570\u5e94\u7528\u4e8e\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><h4>1.3 \u8fdb\u7a0b\u95f4\u901a\u4fe1<\/h4>\n<\/p>\n<p><p><code>multiprocessing<\/code>\u6a21\u5757\u8fd8\u63d0\u4f9b\u4e86\u591a\u79cd\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u65b9\u5f0f\uff0c\u5982\u961f\u5217\uff08Queue\uff09\u548c\u7ba1\u9053\uff08Pipe\uff09\u3002<\/p>\n<\/p>\n<p><p><strong>\u4f7f\u7528Queue<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process, Queue<\/p>\n<p>def worker(q):<\/p>\n<p>    q.put(&quot;Hello from worker&quot;)<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    q = Queue()<\/p>\n<p>    p = Process(target=worker, args=(q,))<\/p>\n<p>    p.start()<\/p>\n<p>    print(q.get())  # Output: Hello from worker<\/p>\n<p>    p.join()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u4f7f\u7528Pipe<\/strong>\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process, Pipe<\/p>\n<p>def worker(conn):<\/p>\n<p>    conn.send(&quot;Hello from worker&quot;)<\/p>\n<p>    conn.close()<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    parent_conn, child_conn = Pipe()<\/p>\n<p>    p = Process(target=worker, args=(child_conn,))<\/p>\n<p>    p.start()<\/p>\n<p>    print(parent_conn.recv())  # Output: Hello from worker<\/p>\n<p>    p.join()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001<code>CONCURRENT.FUTURES<\/code>\u6a21\u5757<\/h3>\n<\/p>\n<p><p><code>concurrent.futures<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u7ea7\u63a5\u53e3\u6765\u5b9e\u73b0\u591a\u8fdb\u7a0b\u3002\u8fd9\u4e2a\u6a21\u5757\u4e2d\u7684<code>ProcessPoolExecutor<\/code>\u7c7b\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u8fdb\u7a0b\u6c60\u3002<\/p>\n<\/p>\n<p><h4>2.1 \u4f7f\u7528ProcessPoolExecutor<\/h4>\n<\/p>\n<p><p><code>ProcessPoolExecutor<\/code>\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u5e76\u884c\u6267\u884c\u591a\u4e2a\u4efb\u52a1\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from concurrent.futures import ProcessPoolExecutor<\/p>\n<p>def cube(x):<\/p>\n<p>    return x * x * x<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    with ProcessPoolExecutor(max_workers=4) as executor:<\/p>\n<p>        results = list(executor.map(cube, [1, 2, 3, 4, 5]))<\/p>\n<p>    print(results)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>ProcessPoolExecutor<\/code>\u521b\u5efa\u4e86\u4e00\u4e2a\u8fdb\u7a0b\u6c60\uff0c\u5e76\u4f7f\u7528<code>map<\/code>\u65b9\u6cd5\u5e76\u884c\u6267\u884c<code>cube<\/code>\u51fd\u6570\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001<code>SUBPROCESS<\/code>\u6a21\u5757<\/h3>\n<\/p>\n<p><p><code>subprocess<\/code>\u6a21\u5757\u5141\u8bb8\u6211\u4eec\u542f\u52a8\u5916\u90e8\u7a0b\u5e8f\uff0c\u8fde\u63a5\u5230\u5b83\u4eec\u7684\u8f93\u5165\/\u8f93\u51fa\/\u9519\u8bef\u7ba1\u9053\uff0c\u5e76\u83b7\u53d6\u5b83\u4eec\u7684\u8fd4\u56de\u7801\u3002<\/p>\n<\/p>\n<p><h4>3.1 \u4f7f\u7528subprocess\u542f\u52a8\u8fdb\u7a0b<\/h4>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528<code>subprocess.run<\/code>\u6765\u6267\u884c\u5916\u90e8\u7a0b\u5e8f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import subprocess<\/p>\n<p>result = subprocess.run([&#39;echo&#39;, &#39;Hello World!&#39;], capture_output=True, text=True)<\/p>\n<p>print(result.stdout)  # Output: Hello World!<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>subprocess.run<\/code>\u542f\u52a8\u4e86\u4e00\u4e2a\u5916\u90e8\u7a0b\u5e8f\u5e76\u83b7\u53d6\u4e86\u5b83\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n<p><h4>3.2 \u4f7f\u7528Popen\u8fdb\u884c\u66f4\u590d\u6742\u7684\u8fdb\u7a0b\u63a7\u5236<\/h4>\n<\/p>\n<p><p><code>Popen<\/code>\u7c7b\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\uff0c\u9002\u7528\u4e8e\u9700\u8981\u66f4\u590d\u6742\u8fdb\u7a0b\u63a7\u5236\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import subprocess<\/p>\n<p>process = subprocess.Popen([&#39;ls&#39;, &#39;-l&#39;], stdout=subprocess.PIPE)<\/p>\n<p>output, errors = process.communicate()<\/p>\n<p>print(output.decode())<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Popen<\/code>\u5bf9\u8c61\u7528\u4e8e\u542f\u52a8\u4e00\u4e2a\u5916\u90e8\u7a0b\u5e8f\uff0c\u5e76\u901a\u8fc7<code>communicate<\/code>\u65b9\u6cd5\u83b7\u53d6\u5b83\u7684\u8f93\u51fa\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u8fdb\u7a0b\u540c\u6b65<\/h3>\n<\/p>\n<p><p>\u5728\u591a\u8fdb\u7a0b\u7f16\u7a0b\u4e2d\uff0c\u8fdb\u7a0b\u540c\u6b65\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8bdd\u9898\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5de5\u5177\u6765\u5b9e\u73b0\u8fdb\u7a0b\u540c\u6b65\uff0c\u5982\u9501\uff08Lock\uff09\u3001\u4fe1\u53f7\u91cf\uff08Semaphore\uff09\u7b49\u3002<\/p>\n<\/p>\n<p><h4>4.1 \u4f7f\u7528Lock<\/h4>\n<\/p>\n<p><p>\u9501\u662f\u4e00\u79cd\u7b80\u5355\u7684\u540c\u6b65\u539f\u8bed\uff0c\u7528\u4e8e\u786e\u4fdd\u53ea\u6709\u4e00\u4e2a\u8fdb\u7a0b\u80fd\u591f\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process, Lock<\/p>\n<p>def worker(lock):<\/p>\n<p>    with lock:<\/p>\n<p>        print(&quot;Lock acquired by&quot;, Process.name)<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    lock = Lock()<\/p>\n<p>    processes = [Process(target=worker, args=(lock,)) for _ in range(5)]<\/p>\n<p>    for p in processes:<\/p>\n<p>        p.start()<\/p>\n<p>    for p in processes:<\/p>\n<p>        p.join()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Lock<\/code>\u5bf9\u8c61\u7528\u4e8e\u540c\u6b65\u8fdb\u7a0b\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u8bbf\u95ee\u3002<\/p>\n<\/p>\n<p><h4>4.2 \u4f7f\u7528Semaphore<\/h4>\n<\/p>\n<p><p>\u4fe1\u53f7\u91cf\u662f\u4e00\u79cd\u66f4\u9ad8\u7ea7\u7684\u540c\u6b65\u539f\u8bed\uff0c\u5141\u8bb8\u591a\u4e2a\u8fdb\u7a0b\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process, Semaphore<\/p>\n<p>def worker(semaphore):<\/p>\n<p>    with semaphore:<\/p>\n<p>        print(&quot;Semaphore acquired by&quot;, Process.name)<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    semaphore = Semaphore(2)<\/p>\n<p>    processes = [Process(target=worker, args=(semaphore,)) for _ in range(5)]<\/p>\n<p>    for p in processes:<\/p>\n<p>        p.start()<\/p>\n<p>    for p in processes:<\/p>\n<p>        p.join()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Semaphore<\/code>\u5bf9\u8c61\u5141\u8bb8\u6700\u591a\u4e24\u4e2a\u8fdb\u7a0b\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u8fdb\u7a0b\u95f4\u5171\u4eab\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u5728\u591a\u8fdb\u7a0b\u7f16\u7a0b\u4e2d\uff0c\u901a\u5e38\u9700\u8981\u5728\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u6570\u636e\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5de5\u5177\u6765\u5b9e\u73b0\u6570\u636e\u5171\u4eab\u3002<\/p>\n<\/p>\n<p><h4>5.1 \u4f7f\u7528Manager<\/h4>\n<\/p>\n<p><p><code>Manager<\/code>\u5bf9\u8c61\u5141\u8bb8\u6211\u4eec\u521b\u5efa\u53ef\u4ee5\u5728\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process, Manager<\/p>\n<p>def worker(shared_list):<\/p>\n<p>    shared_list.append(&quot;Data from worker&quot;)<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    with Manager() as manager:<\/p>\n<p>        shared_list = manager.list()<\/p>\n<p>        processes = [Process(target=worker, args=(shared_list,)) for _ in range(5)]<\/p>\n<p>        for p in processes:<\/p>\n<p>            p.start()<\/p>\n<p>        for p in processes:<\/p>\n<p>            p.join()<\/p>\n<p>        print(shared_list)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Manager<\/code>\u5bf9\u8c61\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u53ef\u4ee5\u5728\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n<p><h4>5.2 \u4f7f\u7528Value\u548cArray<\/h4>\n<\/p>\n<p><p><code>Value<\/code>\u548c<code>Array<\/code>\u5bf9\u8c61\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u5f0f\u6765\u5728\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u7b80\u5355\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from multiprocessing import Process, Value, Array<\/p>\n<p>def increment_counter(counter):<\/p>\n<p>    with counter.get_lock():<\/p>\n<p>        counter.value += 1<\/p>\n<p>if __name__ == &#39;__main__&#39;:<\/p>\n<p>    counter = Value(&#39;i&#39;, 0)<\/p>\n<p>    processes = [Process(target=increment_counter, args=(counter,)) for _ in range(5)]<\/p>\n<p>    for p in processes:<\/p>\n<p>        p.start()<\/p>\n<p>    for p in processes:<\/p>\n<p>        p.join()<\/p>\n<p>    print(counter.value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>Value<\/code>\u5bf9\u8c61\u7528\u4e8e\u5728\u8fdb\u7a0b\u4e4b\u95f4\u5171\u4eab\u4e00\u4e2a\u6574\u578b\u8ba1\u6570\u5668\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u5e38\u89c1\u95ee\u9898\u4e0e\u6ce8\u610f\u4e8b\u9879<\/h3>\n<\/p>\n<p><p>\u5728\u4f7f\u7528\u591a\u8fdb\u7a0b\u65f6\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u5e38\u89c1\u7684\u95ee\u9898\u3002<\/p>\n<\/p>\n<p><h4>6.1 \u6b7b\u9501<\/h4>\n<\/p>\n<p><p>\u6b7b\u9501\u662f\u6307\u4e24\u4e2a\u6216\u591a\u4e2a\u8fdb\u7a0b\u76f8\u4e92\u7b49\u5f85\u5bf9\u65b9\u91ca\u653e\u8d44\u6e90\uff0c\u4ece\u800c\u5bfc\u81f4\u7a0b\u5e8f\u65e0\u6cd5\u7ee7\u7eed\u6267\u884c\u3002\u4e3a\u907f\u514d\u6b7b\u9501\uff0c\u6211\u4eec\u5e94\u8be5\u5c3d\u91cf\u51cf\u5c11\u9501\u7684\u4f7f\u7528\uff0c\u5e76\u786e\u4fdd\u9501\u7684\u83b7\u53d6\u987a\u5e8f\u4e00\u81f4\u3002<\/p>\n<\/p>\n<p><h4>6.2 \u8fdb\u7a0b\u5b89\u5168<\/h4>\n<\/p>\n<p><p>\u591a\u8fdb\u7a0b\u7f16\u7a0b\u4e2d\u7684\u8fdb\u7a0b\u5b89\u5168\u95ee\u9898\u901a\u5e38\u4e0e\u5171\u4eab\u8d44\u6e90\u7684\u540c\u6b65\u6709\u5173\u3002\u786e\u4fdd\u4f7f\u7528\u9002\u5f53\u7684\u540c\u6b65\u5de5\u5177\uff08\u5982\u9501\u548c\u4fe1\u53f7\u91cf\uff09\u6765\u4fdd\u62a4\u5171\u4eab\u8d44\u6e90\u3002<\/p>\n<\/p>\n<p><h4>6.3 \u6027\u80fd\u95ee\u9898<\/h4>\n<\/p>\n<p><p>\u867d\u7136\u591a\u8fdb\u7a0b\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6027\u80fd\uff0c\u4f46\u5b83\u4e5f\u53ef\u80fd\u5f15\u5165\u989d\u5916\u7684\u5f00\u9500\u3002\u5e94\u4ed4\u7ec6\u8bc4\u4f30\u591a\u8fdb\u7a0b\u7684\u4f7f\u7528\u573a\u666f\uff0c\u5e76\u907f\u514d\u5728\u4e0d\u5fc5\u8981\u7684\u60c5\u51b5\u4e0b\u521b\u5efa\u8fc7\u591a\u7684\u8fdb\u7a0b\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u5408\u7406\u4f7f\u7528<code>multiprocessing<\/code>\u3001<code>concurrent.futures<\/code>\u548c<code>subprocess<\/code>\u6a21\u5757\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Python\u4e2d\u5b9e\u73b0\u9ad8\u6548\u7684\u591a\u8fdb\u7a0b\u7a0b\u5e8f\u3002\u8fd9\u4e9b\u6a21\u5757\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\uff0c\u80fd\u591f\u6ee1\u8db3\u591a\u79cd\u591a\u8fdb\u7a0b\u7f16\u7a0b\u9700\u6c42\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u591a\u8fdb\u7a0b\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>multiprocessing<\/code>\u6a21\u5757\u6765\u521b\u5efa\u591a\u8fdb\u7a0b\u3002\u8be5\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u7684API\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u542f\u52a8\u591a\u4e2a\u8fdb\u7a0b\u5e76\u4e0e\u5b83\u4eec\u8fdb\u884c\u901a\u4fe1\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa<code>Process<\/code>\u5bf9\u8c61\u6765\u542f\u52a8\u65b0\u8fdb\u7a0b\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>Pool<\/code>\u6765\u7ba1\u7406\u591a\u4e2a\u8fdb\u7a0b\u7684\u6267\u884c\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n<pre><code class=\"language-python\">from multiprocessing import Process\n\ndef worker(num):\n    print(f&#39;Worker: {num}&#39;)\n\nif __name__ == &#39;__main__&#39;:\n    processes = []\n    for i in range(5):\n        p = Process(target=worker, args=(i,))\n        processes.append(p)\n        p.start()\n\n    for p in processes:\n        p.join()\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u521b\u5efa\u548c\u542f\u52a8\u591a\u4e2a\u8fdb\u7a0b\uff0c\u5e76\u786e\u4fdd\u6240\u6709\u8fdb\u7a0b\u5728\u4e3b\u7a0b\u5e8f\u9000\u51fa\u4e4b\u524d\u5b8c\u6210\u6267\u884c\u3002<\/p>\n<p><strong>\u591a\u8fdb\u7a0b\u4e0e\u591a\u7ebf\u7a0b\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/strong><br \/>\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u90fd\u662f\u5b9e\u73b0\u5e76\u53d1\u7684\u65b9\u5f0f\uff0c\u4f46\u5b83\u4eec\u7684\u5de5\u4f5c\u539f\u7406\u4e0d\u540c\u3002\u591a\u8fdb\u7a0b\u662f\u901a\u8fc7\u521b\u5efa\u591a\u4e2a\u72ec\u7acb\u7684\u8fdb\u7a0b\u6765\u5b9e\u73b0\u7684\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u62e5\u6709\u81ea\u5df1\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u56e0\u6b64\u53ef\u4ee5\u5145\u5206\u5229\u7528\u591a\u6838CPU\u7684\u4f18\u52bf\u3002\u76f8\u5bf9\u800c\u8a00\uff0c\u591a\u7ebf\u7a0b\u5728\u540c\u4e00\u8fdb\u7a0b\u5185\u8fd0\u884c\uff0c\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u5185\u5b58\uff0c\u53ef\u80fd\u4f1a\u53d7\u5230\u5168\u5c40\u89e3\u91ca\u5668\u9501\uff08GIL\uff09\u7684\u9650\u5236\u3002\u5728CPU\u5bc6\u96c6\u578b\u4efb\u52a1\u4e2d\uff0c\u591a\u8fdb\u7a0b\u5f80\u5f80\u8868\u73b0\u66f4\u597d\uff0c\u800c\u5728I\/O\u5bc6\u96c6\u578b\u4efb\u52a1\u4e2d\uff0c\u591a\u7ebf\u7a0b\u53ef\u80fd\u66f4\u4e3a\u9ad8\u6548\u3002<\/p>\n<p><strong>\u4f7f\u7528\u591a\u8fdb\u7a0b\u65f6\u9700\u8981\u6ce8\u610f\u54ea\u4e9b\u4e8b\u9879\uff1f<\/strong><br \/>\u5728\u4f7f\u7528\u591a\u8fdb\u7a0b\u65f6\uff0c\u6709\u51e0\u4e2a\u91cd\u8981\u7684\u4e8b\u9879\u9700\u8981\u6ce8\u610f\u3002\u9996\u5148\uff0c\u8fdb\u7a0b\u4e4b\u95f4\u7684\u6570\u636e\u5171\u4eab\u9700\u8981\u901a\u8fc7\u961f\u5217\uff08<code>Queue<\/code>\uff09\u6216\u7ba1\u9053\uff08<code>Pipe<\/code>\uff09\u7b49\u673a\u5236\u5b9e\u73b0\uff0c\u76f4\u63a5\u5171\u4eab\u5185\u5b58\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u3002\u5176\u6b21\uff0c\u521b\u5efa\u8fdb\u7a0b\u7684\u5f00\u9500\u76f8\u5bf9\u8f83\u5927\uff0c\u9891\u7e41\u521b\u5efa\u548c\u9500\u6bc1\u8fdb\u7a0b\u53ef\u80fd\u5f71\u54cd\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u5408\u7406\u4f7f\u7528\u8fdb\u7a0b\u6c60\uff08<code>Pool<\/code>\uff09\u6765\u7ba1\u7406\u8fdb\u7a0b\u7684\u751f\u547d\u5468\u671f\u662f\u4e00\u4e2a\u597d\u7684\u5b9e\u8df5\u3002\u6b64\u5916\uff0c\u786e\u4fdd\u5728\u4e3b\u6a21\u5757\u4e2d\u4f7f\u7528<code>if __name__ == &#39;__main__&#39;<\/code>\u8bed\u53e5\uff0c\u4ee5\u907f\u514d\u5728Windows\u7cfb\u7edf\u4e0a\u51fa\u73b0\u610f\u5916\u7684\u8fdb\u7a0b\u91cd\u590d\u521b\u5efa\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5b9e\u73b0\u591a\u8fdb\u7a0b\u7684\u4e3b\u8981\u65b9\u5f0f\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a\u4f7f\u7528multiprocessing\u6a21\u5757\u3001\u5229\u7528concurren [&hellip;]","protected":false},"author":3,"featured_media":996453,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/996451"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=996451"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/996451\/revisions"}],"predecessor-version":[{"id":996454,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/996451\/revisions\/996454"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/996453"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=996451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=996451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=996451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}