{"id":1587,"date":"2023-03-25T11:33:17","date_gmt":"2023-03-25T03:33:17","guid":{"rendered":""},"modified":"2023-03-25T11:33:17","modified_gmt":"2023-03-25T03:33:17","slug":"Python\u7ebf\u7a0b\u4e8b\u4ef6\u9a71\u52a8","status":"publish","type":"post","link":"https:\/\/bianchenghao6.com\/1587.html","title":{"rendered":"Python\u7ebf\u7a0b\u4e8b\u4ef6\u9a71\u52a8"},"content":{"rendered":"


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Python\u7ebf\u7a0b\u4e8b\u4ef6\u9a71\u52a8<\/h1>\n

Python\u7ebf\u7a0b\u4e8b\u4ef6\u9a71\u52a8\u8be6\u7ec6\u64cd\u4f5c\u6559\u7a0b<\/span>\n <\/div>\n

\n \u4e8b\u4ef6\u9a71\u52a8\u7684\u7f16\u7a0b\u7740\u91cd\u4e8e\u4e8b\u4ef6\u3002\u6700\u7ec8\uff0c\u7a0b\u5e8f\u7684\u6d41\u7a0b\u53d6\u51b3\u4e8e\u4e8b\u4ef6\u3002\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u53ea\u5904\u7406\u987a\u5e8f\u6267\u884c\u6a21\u578b\u6216\u5e76\u884c\u6267\u884c\u6a21\u578b\uff0c\u4f46\u662f\u5177\u6709\u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\u6982\u5ff5\u7684\u6a21\u578b\u79f0\u4e3a\u5f02\u6b65\u6a21\u578b\u3002\u4e8b\u4ef6\u9a71\u52a8\u7684\u7f16\u7a0b\u53d6\u51b3\u4e8e\u59cb\u7ec8\u4fa6\u542c\u65b0\u4f20\u5165\u4e8b\u4ef6\u7684\u4e8b\u4ef6\u5faa\u73af\u3002\u4e8b\u4ef6\u9a71\u52a8\u7684\u7f16\u7a0b\u7684\u5de5\u4f5c\u53d6\u51b3\u4e8e\u4e8b\u4ef6\u3002\u4e00\u65e6\u4e8b\u4ef6\u5faa\u73af\uff0c\u4e8b\u4ef6\u5c06\u51b3\u5b9a\u6267\u884c\u4ec0\u4e48\u548c\u4ee5\u4ec0\u4e48\u987a\u5e8f\u6267\u884c\u3002\u4ee5\u4e0b\u6d41\u7a0b\u56fe\u5c06\u5e2e\u52a9\u60a8\u4e86\u89e3\u5176\u5de5\u4f5c\u539f\u7406-\n <\/div>\n

Python\u7ebf\u7a0b\u4e8b\u4ef6\u9a71\u52a8_https:\/\/bianchenghao6.com_\u3010Python\u591a\u7ebf\u7a0b\u6559\u7a0b\u3011_\u7b2c1\u5f20 <\/p>\n

Python\u6a21\u5757\u2013 Asyncio <\/h2>\n
\n Asyncio\u6a21\u5757\u662f\u5728Python 3.4\u4e2d\u6dfb\u52a0\u7684\uff0c\u5b83\u63d0\u4f9b\u4e86\u4f7f\u7528\u534f\u540c\u4f8b\u7a0b\u7f16\u5199\u5355\u7ebf\u7a0b\u5e76\u53d1\u4ee3\u7801\u7684\u57fa\u7840\u7ed3\u6784\u3002\u4ee5\u4e0b\u662fAsyncio\u6a21\u5757\u4f7f\u7528\u7684\u4e0d\u540c\u6982\u5ff5-\n <\/div>\n

\u4e8b\u4ef6\u5faa\u73af<\/h3>\n
\n \u4e8b\u4ef6\u5faa\u73af\u662f\u4e00\u79cd\u529f\u80fd\uff0c\u7528\u4e8e\u5904\u7406\u8ba1\u7b97\u4ee3\u7801\u4e2d\u7684\u6240\u6709\u4e8b\u4ef6\u3002\u5b83\u5728\u6574\u4e2a\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u59cb\u7ec8\u8d77\u4f5c\u7528\uff0c\u5e76\u8ddf\u8e2a\u4e8b\u4ef6\u7684\u4f20\u5165\u548c\u6267\u884c\u3002 Asyncio\u6a21\u5757\u5141\u8bb8\u6bcf\u4e2a\u8fdb\u7a0b\u4e00\u4e2a\u4e8b\u4ef6\u5faa\u73af\u3002\u4ee5\u4e0b\u662fAsyncio\u6a21\u5757\u63d0\u4f9b\u7684\u4e00\u4e9b\u7528\u4e8e\u7ba1\u7406\u4e8b\u4ef6\u5faa\u73af\u7684\u65b9\u6cd5-\n <\/div>\n

loop = get_event_loop()<\/b>-\u6b64\u65b9\u6cd5\u5c06\u4e3a\u5f53\u524d\u4e0a\u4e0b\u6587\u63d0\u4f9b\u4e8b\u4ef6\u5faa\u73af\u3002<\/span>
\n loop.call_later\uff08time_delay\uff0ccallback\uff0cargument\uff09<\/b>-\u6b64\u65b9\u6cd5\u5b89\u6392\u5728\u7ed9\u5b9atime_delay\u79d2\u540e\u8c03\u7528\u7684\u56de\u8c03\u3002<\/span>
\n loop.call_soon\uff08callback\uff0cargument\uff09<\/b>-\u6b64\u65b9\u6cd5\u5b89\u6392\u4e86\u4e00\u4e2a\u5c3d\u5feb\u88ab\u8c03\u7528\u7684\u56de\u8c03\u3002\u5728call_soon()\u8fd4\u56de\u4e4b\u540e\u4ee5\u53ca\u63a7\u4ef6\u8fd4\u56de\u4e8b\u4ef6\u5faa\u73af\u65f6\u8c03\u7528\u8be5\u56de\u8c03\u3002<\/span>
\n loop.time()<\/b>-\u6b64\u65b9\u6cd5\u7528\u4e8e\u6839\u636e\u4e8b\u4ef6\u5faa\u73af\u7684\u5185\u90e8\u65f6\u949f\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u3002<\/span>
\n asyncio.set_event_loop()<\/b>-\u6b64\u65b9\u6cd5\u4f1a\u5c06\u5f53\u524d\u4e0a\u4e0b\u6587\u7684\u4e8b\u4ef6\u5faa\u73af\u8bbe\u7f6e\u4e3a\u5faa\u73af\u3002<\/span>
\n asyncio.new_event_loop()<\/b>-\u6b64\u65b9\u6cd5\u5c06\u521b\u5efa\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u4e8b\u4ef6\u5faa\u73af\u5bf9\u8c61\u3002<\/span>
\n loop.run_forever()<\/b>-\u6b64\u65b9\u6cd5\u5c06\u4e00\u76f4\u8fd0\u884c\uff0c\u76f4\u5230\u8c03\u7528stop()\u65b9\u6cd5\u4e3a\u6b62\u3002<\/span> <\/p>\n

\u793a\u4f8b<\/h3>\n
\n \u4e0b\u9762\u7684\u4e8b\u4ef6\u5faa\u73af\u793a\u4f8b\u901a\u8fc7\u4f7f\u7528get_event_loop()\u65b9\u6cd5\u5e2e\u52a9\u6253\u5370
\n hello world <\/b>\u3002\u6b64\u793a\u4f8b\u6458\u81eaPython\u5b98\u65b9\u6587\u6863\u3002\n <\/div>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 import <\/span>asyncio
 def <\/span>hello_world(loop):
    print('Hello World'<\/span>)
    loop.stop<\/span>()
 loop = asyncio.get_event_loop<\/span>()
 loop.call_soon<\/span>(hello_world, loop)
 loop.run_forever<\/span>()
 loop.close<\/span>()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u8f93\u51fa<\/h3>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 Hello World
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
Future<\/h3>\n
\n    \u8fd9\u4e0e\u5e76\u53d1.futures.Future\u7c7b\u517c\u5bb9\uff0c\u8be5\u7c7b\u8868\u793a\u5c1a\u672a\u5b8c\u6210\u7684\u8ba1\u7b97\u3002 asyncio.futures.Future\u548c\u5e76\u53d1.futures.Future\u4e4b\u95f4\u6709\u4ee5\u4e0b\u533a\u522b-\n  <\/div>\n
   result()\u548cexception()\u65b9\u6cd5\u4e0d\u4f1a\u4f7f\u7528\u8d85\u65f6\u53c2\u6570\uff0c\u5e76\u4e14\u5728\u672a\u6765\u8fd8\u6ca1\u6709\u5b8c\u6210\u65f6\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/span>
\n  \u5728add_done_callback()\u4e2d\u6ce8\u518c\u7684\u56de\u8c03\u603b\u662f\u901a\u8fc7\u4e8b\u4ef6\u5faa\u73af\u7684call_soon()\u8fdb\u884c\u8c03\u7528\u3002<\/span>
\n   asyncio.futures.Future\u7c7b\u4e0e\u5e76\u53d1.futures\u5305\u4e2d\u7684wait()\u548cas_completed()\u51fd\u6570\u4e0d\u517c\u5bb9\u3002<\/span> <\/p>\n
\u793a\u4f8b<\/h3>\n
\n    \u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5b83\u5c06\u5e2e\u52a9\u60a8\u4e86\u89e3\u5982\u4f55\u4f7f\u7528asyncio.futures.future\u7c7b\u3002\n  <\/div>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 import <\/span>asyncio
 async def <\/span>Myoperation(future):
    await asyncio.sleep<\/span>(2)
    future.set_result<\/span>('Future Completed'<\/span>)
 loop = asyncio.get_event_loop<\/span>()
 future = asyncio.Future<\/span>()
 asyncio.ensure_future<\/span>(Myoperation(future))
 try:
    loop.run_until_complete<\/span>(future)
    print(future.result<\/span>())
 finally:
    loop.close<\/span>()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u8f93\u51fa<\/h3>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 Future Completed
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u534f\u7a0b<\/h3>\n
\n    Asyncio\u4e2d\u7684\u534f\u7a0b\u7684\u6982\u5ff5\u7c7b\u4f3c\u4e8e\u7ebf\u7a0b\u6a21\u5757\u4e0b\u7684\u6807\u51c6Thread\u5bf9\u8c61\u7684\u6982\u5ff5\u3002\u8fd9\u662f\u5b50\u4f8b\u7a0b\u6982\u5ff5\u7684\u6982\u62ec\u3002\u534f\u7a0b\u53ef\u4ee5\u5728\u6267\u884c\u671f\u95f4\u6302\u8d77\uff0c\u4ee5\u4fbf\u7b49\u5f85\u5916\u90e8\u5904\u7406\uff0c\u5e76\u4ece\u5916\u90e8\u5904\u7406\u5b8c\u6210\u65f6\u505c\u6b62\u7684\u4f4d\u7f6e\u8fd4\u56de\u3002\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5b9e\u73b0\u534f\u7a0b-\n  <\/div>\n
\u5f02\u6b65def\u51fd\u6570()<\/h3>\n
\n    \u8fd9\u662f\u5728Asyncio\u6a21\u5757\u4e0b\u5b9e\u73b0\u534f\u7a0b\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u76f8\u540c\u7684Python\u811a\u672c-\n  <\/div>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 import <\/span>asyncio
 async def <\/span>Myoperation():
    print(\"First Coroutine\"<\/span>)
 loop = asyncio.get_event_loop<\/span>()
 try:
    loop.run_until_complete<\/span>(Myoperation())
 finally:
    loop.close<\/span>()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u8f93\u51fa<\/h3>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 First Coroutine
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
 @asyncio.coroutine\u88c5\u9970\u5668<\/h3>\n
\n    \u5b9e\u73b0\u534f\u7a0b\u7684\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u5e26\u6709@asyncio.coroutine\u88c5\u9970\u5668\u7684\u751f\u6210\u5668\u3002\u4ee5\u4e0b\u662f\u76f8\u540c\u7684Python\u811a\u672c-\n  <\/div>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 import <\/span>asyncio
 @asyncio.coroutine
 def <\/span>Myoperation():
    print(\"First Coroutine\"<\/span>)
 loop = asyncio.get_event_loop<\/span>()
 try:
    loop.run_until_complete<\/span>(Myoperation())
 finally:
    loop.close<\/span>()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u8f93\u51fa<\/h3>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 First Coroutine
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u4efb\u52a1<\/h3>\n
\n    Asyncio\u6a21\u5757\u7684\u6b64\u5b50\u7c7b\u8d1f\u8d23\u4ee5\u5e76\u884c\u65b9\u5f0f\u5728\u4e8b\u4ef6\u5faa\u73af\u5185\u6267\u884c\u534f\u7a0b\u3002\u4ee5\u4e0bPython\u811a\u672c\u662f\u5e76\u884c\u5904\u7406\u67d0\u4e9b\u4efb\u52a1\u7684\u793a\u4f8b\u3002\n  <\/div>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 import <\/span>asyncio
 import <\/span>time
 async def <\/span>Task_ex(n):
    time.sleep<\/span>(1)
    print(\"Processing {}\"<\/span>.format<\/span>(n))
 async def <\/span>Generator_task():
    for <\/span><\/span>i in <\/span>range(10):
       asyncio.ensure_future<\/span>(Task_ex(i))
    int(\"Tasks Completed\"<\/span>)
    asyncio.sleep<\/span>(2)
 loop = asyncio.get_event_loop<\/span>()
 loop.run_until_complete<\/span>(Generator_task())
 loop.close<\/span>()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u8f93\u51fa<\/h3>\n
\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 Tasks Completed
 Processing 0
 Processing 1
 Processing 2
 Processing 3
 Processing 4
 Processing 5
 Processing 6
 Processing 7
 Processing 8
 Processing 9
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u8fd0\u8f93<\/h3>\n
\n    Asyncio\u6a21\u5757\u63d0\u4f9b\u7528\u4e8e\u5b9e\u73b0\u5404\u79cd\u901a\u4fe1\u7c7b\u578b\u7684\u4f20\u8f93\u7c7b\u3002\u8fd9\u4e9b\u7c7b\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u5e76\u4e14\u5728\u5efa\u7acb\u901a\u4fe1\u901a\u9053\u540e\u603b\u662f\u4e0e\u534f\u8bae\u5b9e\u4f8b\u914d\u5bf9\u3002\n  <\/div>\n
\n    \u4ee5\u4e0b\u662f\u4eceBaseTransport\u7ee7\u627f\u7684\u4e0d\u540c\u7c7b\u578b\u7684\u4f20\u8f93-\n  <\/div>\n
    ReadTransport <\/b>-\u8fd9\u662f\u53ea\u8bfb\u4f20\u8f93\u7684\u63a5\u53e3\u3002<\/span>
\n    WriteTransport <\/b>-\u8fd9\u662f\u4ec5\u5199\u4f20\u8f93\u7684\u63a5\u53e3\u3002<\/span>
\n    DatagramTransport <\/b>-\u8fd9\u662f\u7528\u4e8e\u53d1\u9001\u6570\u636e\u7684\u63a5\u53e3\u3002<\/span>
\n    BaseSubprocessTransport <\/b>-\u7c7b\u4f3c\u4e8eBaseTransport\u7c7b\u3002<\/span> <\/p>\n
\n    \u4ee5\u4e0b\u662fBaseTransport\u7c7b\u7684\u4e94\u4e2a\u4e0d\u540c\u65b9\u6cd5\uff0c\u5b83\u4eec\u968f\u540e\u5728\u56db\u79cd\u4f20\u8f93\u7c7b\u578b\u4e4b\u95f4\u90fd\u662f\u77ac\u6001\u7684-\n  <\/div>\n
    close()<\/b>-\u5173\u95ed\u4f20\u8f93\u3002<\/span>
\n    is_closing()<\/b>-\u5982\u679c\u4f20\u8f93\u6b63\u5728\u5173\u95ed\u6216\u5df2\u7ecf\u5173\u95ed\uff0c\u5219\u6b64\u65b9\u6cd5\u5c06\u8fd4\u56detrue\u3002   get_extra_info\uff08name\uff0cdefault = none\uff09<\/b>-\u8fd9\u5c06\u4e3a\u6211\u4eec\u63d0\u4f9b\u6709\u5173\u8fd0\u8f93\u7684\u66f4\u591a\u4fe1\u606f\u3002<\/span>   get_protocol()<\/b>-\u6b64\u65b9\u6cd5\u5c06\u8fd4\u56de\u5f53\u524d\u534f\u8bae\u3002<\/span> <\/p>\n
\u534f\u8bae<\/h3>\n
\n     Asyncio\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u4e9b\u57fa\u7c7b\uff0c\u60a8\u53ef\u4ee5\u5c06\u5176\u5b50\u7c7b\u5316\u4ee5\u5b9e\u73b0\u7f51\u7edc\u534f\u8bae\u3002\u8fd9\u4e9b\u7c7b\u4e0e\u4f20\u8f93\u4e00\u8d77\u4f7f\u7528\u3002\u534f\u8bae\u89e3\u6790\u4f20\u5165\u7684\u6570\u636e\u5e76\u8981\u6c42\u5199\u5165\u4f20\u51fa\u7684\u6570\u636e\uff0c\u800c\u4f20\u8f93\u8d1f\u8d23\u5b9e\u9645\u7684I \/ O\u548c\u7f13\u51b2\u3002\u4ee5\u4e0b\u662f\u4e09\u7c7b\u534f\u8bae-\n   <\/div>\n
  \u534f\u8bae<\/b>-\u8fd9\u662f\u5b9e\u73b0\u7528\u4e8eTCP\u548cSSL\u4f20\u8f93\u7684\u6d41\u534f\u8bae\u7684\u57fa\u7c7b\u3002<\/span>   DatagramProtocol <\/b>-\u8fd9\u662f\u7528\u4e8e\u5b9e\u73b0\u4e0eUDP\u4f20\u8f93\u4e00\u8d77\u4f7f\u7528\u7684\u6570\u636e\u62a5\u534f\u8bae\u7684\u57fa\u7c7b\u3002<\/span>   SubprocessProtocol <\/b>-\u8fd9\u662f\u7528\u4e8e\u5b9e\u73b0\u901a\u8fc7\u4e00\u7ec4\u5355\u5411\u7ba1\u9053\u4e0e\u5b50\u8fdb\u7a0b\u8fdb\u884c\u901a\u4fe1\u7684\u534f\u8bae\u7684\u57fa\u7c7b\u3002<\/span> <\/span>
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