{"id":1116339,"date":"2025-01-08T18:15:31","date_gmt":"2025-01-08T10:15:31","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1116339.html"},"modified":"2025-01-08T18:15:33","modified_gmt":"2025-01-08T10:15:33","slug":"python%e5%a6%82%e4%bd%95%e6%b8%85%e7%a9%ba%e4%b8%b2%e5%8f%a3%e6%8e%a5%e6%94%b6%e5%88%b0%e7%9a%84%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1116339.html","title":{"rendered":"python\u5982\u4f55\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u5230\u7684\u6570\u636e"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25080730\/7730ae99-048f-4132-abdc-ce840f6f9c16.webp\" alt=\"python\u5982\u4f55\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u5230\u7684\u6570\u636e\" \/><\/p>\n<p><p> <strong>Python\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u5230\u7684\u6570\u636e\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528flushInput()\u3001\u901a\u8fc7\u8bfb\u53d6\u5e76\u4e22\u5f03\u6240\u6709\u63a5\u6536\u5230\u7684\u6570\u636e\u3001\u4f7f\u7528reset_input_buffer()\u3002<\/strong> \u5176\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u901a\u8fc7\u8c03\u7528 <code>reset_input_buffer()<\/code> \u6765\u6e05\u7a7a\u4e32\u53e3\u8f93\u5165\u7f13\u51b2\u533a\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u51e0\u79cd\u65b9\u6cd5\u53ca\u5176\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528flushInput()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p><code>flushInput()<\/code> \u65b9\u6cd5\u662f pySerial \u5e93\u63d0\u4f9b\u7684\u4e00\u4e2a\u529f\u80fd\uff0c\u53ef\u4ee5\u76f4\u63a5\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a\u3002\u8fd9\u4e2a\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\u548c\u76f4\u63a5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<h2><strong>\u521d\u59cb\u5316\u4e32\u53e3<\/strong><\/h2>\n<p>ser = serial.Serial(&#39;COM1&#39;, 9600, timeout=1)<\/p>\n<h2><strong>\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a<\/strong><\/h2>\n<p>ser.flushInput()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u6b64\u65b9\u6cd5\u901a\u8fc7\u6e05\u7a7a\u63a5\u6536\u7f13\u51b2\u533a\u6765\u786e\u4fdd\u6ca1\u6709\u672a\u5904\u7406\u7684\u6570\u636e\u7559\u5728\u7f13\u51b2\u533a\u4e2d\uff0c\u4ece\u800c\u907f\u514d\u4e86\u6570\u636e\u6df7\u6dc6\u6216\u8bfb\u53d6\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u901a\u8fc7\u8bfb\u53d6\u5e76\u4e22\u5f03\u6240\u6709\u63a5\u6536\u5230\u7684\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u901a\u8fc7\u5faa\u73af\u8bfb\u53d6\u4e32\u53e3\u4e2d\u7684\u6240\u6709\u6570\u636e\u5e76\u5c06\u5176\u4e22\u5f03\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u66f4\u7075\u6d3b\u63a7\u5236\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<h2><strong>\u521d\u59cb\u5316\u4e32\u53e3<\/strong><\/h2>\n<p>ser = serial.Serial(&#39;COM1&#39;, 9600, timeout=1)<\/p>\n<h2><strong>\u5faa\u73af\u8bfb\u53d6\u5e76\u4e22\u5f03\u63a5\u6536\u5230\u7684\u6240\u6709\u6570\u636e<\/strong><\/h2>\n<p>while ser.in_w<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>ting &gt; 0:<\/p>\n<p>    ser.read(ser.in_waiting)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u68c0\u67e5 <code>ser.in_waiting<\/code>\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\u5f53\u524d\u63a5\u6536\u7f13\u51b2\u533a\u4e2d\u6709\u591a\u5c11\u6570\u636e\uff0c\u7136\u540e\u901a\u8fc7 <code>ser.read()<\/code> \u65b9\u6cd5\u8bfb\u53d6\u5e76\u4e22\u5f03\u8fd9\u4e9b\u6570\u636e\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528reset_input_buffer()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p><code>reset_input_buffer()<\/code> \u65b9\u6cd5\u4e5f\u662f pySerial \u5e93\u63d0\u4f9b\u7684\u4e00\u4e2a\u529f\u80fd\uff0c\u7528\u4e8e\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a\u3002\u8fd9\u662f\u73b0\u4ee3 pySerial \u7248\u672c\u4e2d\u63a8\u8350\u4f7f\u7528\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<h2><strong>\u521d\u59cb\u5316\u4e32\u53e3<\/strong><\/h2>\n<p>ser = serial.Serial(&#39;COM1&#39;, 9600, timeout=1)<\/p>\n<h2><strong>\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a<\/strong><\/h2>\n<p>ser.reset_input_buffer()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e2a\u65b9\u6cd5\u548c <code>flushInput()<\/code> \u65b9\u6cd5\u7684\u6548\u679c\u662f\u4e00\u6837\u7684\uff0c\u4f46 <code>reset_input_buffer()<\/code> \u662f pySerial \u65b0\u7248\u672c\u4e2d\u63a8\u8350\u7684\u6807\u51c6\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u786e\u4fdd\u4e32\u53e3\u914d\u7f6e\u6b63\u786e<\/h3>\n<\/p>\n<p><p>\u786e\u4fdd\u4e32\u53e3\u7684\u914d\u7f6e\u6b63\u786e\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5982\u679c\u4e32\u53e3\u914d\u7f6e\u4e0d\u6b63\u786e\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u6216\u8bfb\u53d6\u9519\u8bef\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u4e32\u53e3\u914d\u7f6e\u53c2\u6570\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<h2><strong>\u521d\u59cb\u5316\u4e32\u53e3<\/strong><\/h2>\n<p>ser = serial.Serial(<\/p>\n<p>    port=&#39;COM1&#39;,<\/p>\n<p>    baudrate=9600,<\/p>\n<p>    bytesize=serial.EIGHTBITS,<\/p>\n<p>    parity=serial.PARITY_NONE,<\/p>\n<p>    stopbits=serial.STOPBITS_ONE,<\/p>\n<p>    timeout=1<\/p>\n<p>)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u914d\u7f6e\u4e32\u53e3\u65f6\uff0c\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8bbe\u7f6e\u8fd9\u4e9b\u53c2\u6570\uff0c\u4ee5\u786e\u4fdd\u4e32\u53e3\u901a\u4fe1\u7684\u7a33\u5b9a\u6027\u548c\u51c6\u786e\u6027\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u5904\u7406\u4e32\u53e3\u5f02\u5e38\u60c5\u51b5<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u5f02\u5e38\u60c5\u51b5\uff0c\u4f8b\u5982\u4e32\u53e3\u65ad\u5f00\u3001\u6570\u636e\u4f20\u8f93\u9519\u8bef\u7b49\u3002\u4e3a\u4e86\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\uff0c\u9700\u8981\u6355\u83b7\u5e76\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<p>try:<\/p>\n<p>    # \u521d\u59cb\u5316\u4e32\u53e3<\/p>\n<p>    ser = serial.Serial(&#39;COM1&#39;, 9600, timeout=1)<\/p>\n<p>    # \u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a<\/p>\n<p>    ser.reset_input_buffer()<\/p>\n<p>except serial.SerialException as e:<\/p>\n<p>    print(f&quot;\u4e32\u53e3\u9519\u8bef: {e}&quot;)<\/p>\n<p>except Exception as e:<\/p>\n<p>    print(f&quot;\u5176\u4ed6\u9519\u8bef: {e}&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u6355\u83b7 <code>serial.SerialException<\/code> \u548c\u5176\u4ed6\u53ef\u80fd\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u786e\u4fdd\u7a0b\u5e8f\u5728\u9047\u5230\u95ee\u9898\u65f6\u4e0d\u4f1a\u5d29\u6e83\uff0c\u5e76\u80fd\u591f\u8fdb\u884c\u9002\u5f53\u7684\u5904\u7406\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u7efc\u5408\u793a\u4f8b<\/h3>\n<\/p>\n<p><p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7efc\u5408\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a\u5e76\u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import serial<\/p>\n<p>import time<\/p>\n<p>def initialize_serial(port, baudrate):<\/p>\n<p>    try:<\/p>\n<p>        ser = serial.Serial(port, baudrate, timeout=1)<\/p>\n<p>        return ser<\/p>\n<p>    except serial.SerialException as e:<\/p>\n<p>        print(f&quot;\u4e32\u53e3\u521d\u59cb\u5316\u9519\u8bef: {e}&quot;)<\/p>\n<p>        return None<\/p>\n<p>def clear_serial_buffer(ser):<\/p>\n<p>    ser.reset_input_buffer()<\/p>\n<p>def read_serial_data(ser):<\/p>\n<p>    try:<\/p>\n<p>        if ser.in_waiting &gt; 0:<\/p>\n<p>            data = ser.read(ser.in_waiting).decode(&#39;utf-8&#39;)<\/p>\n<p>            return data<\/p>\n<p>        else:<\/p>\n<p>            return None<\/p>\n<p>    except serial.SerialException as e:<\/p>\n<p>        print(f&quot;\u8bfb\u53d6\u4e32\u53e3\u6570\u636e\u9519\u8bef: {e}&quot;)<\/p>\n<p>        return None<\/p>\n<p>def main():<\/p>\n<p>    port = &#39;COM1&#39;<\/p>\n<p>    baudrate = 9600<\/p>\n<p>    ser = initialize_serial(port, baudrate)<\/p>\n<p>    if ser is None:<\/p>\n<p>        return<\/p>\n<p>    clear_serial_buffer(ser)<\/p>\n<p>    while True:<\/p>\n<p>        data = read_serial_data(ser)<\/p>\n<p>        if data:<\/p>\n<p>            print(f&quot;\u63a5\u6536\u5230\u7684\u6570\u636e: {data}&quot;)<\/p>\n<p>        time.sleep(1)<\/p>\n<p>if __name__ == &quot;__main__&quot;:<\/p>\n<p>    main()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u51e0\u4e2a\u51fd\u6570\u6765\u521d\u59cb\u5316\u4e32\u53e3\u3001\u6e05\u7a7a\u63a5\u6536\u7f13\u51b2\u533a\u548c\u8bfb\u53d6\u6570\u636e\u3002\u4e3b\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u6301\u7eed\u8bfb\u53d6\u4e32\u53e3\u6570\u636e\u5e76\u6253\u5370\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n<p><h3>\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u4ecb\u7ecd\uff0c\u6211\u4eec\u8be6\u7ec6\u8bb2\u89e3\u4e86\u5982\u4f55\u4f7f\u7528 Python \u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u5230\u7684\u6570\u636e\uff0c\u5305\u62ec\u4f7f\u7528 <code>flushInput()<\/code> \u65b9\u6cd5\u3001\u901a\u8fc7\u8bfb\u53d6\u5e76\u4e22\u5f03\u6240\u6709\u63a5\u6536\u5230\u7684\u6570\u636e\u4ee5\u53ca\u4f7f\u7528 <code>reset_input_buffer()<\/code> \u65b9\u6cd5\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u4ecb\u7ecd\u4e86\u5982\u4f55\u786e\u4fdd\u4e32\u53e3\u914d\u7f6e\u6b63\u786e\u548c\u5904\u7406\u4e32\u53e3\u5f02\u5e38\u60c5\u51b5\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5408\u7406\u5730\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u7f13\u51b2\u533a\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6570\u636e\u6df7\u6dc6\u548c\u8bfb\u53d6\u9519\u8bef\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u6e05\u9664\u4e32\u53e3\u7f13\u51b2\u533a\u7684\u6570\u636e\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>pyserial<\/code>\u5e93\u6765\u64cd\u4f5c\u4e32\u53e3\u3002\u5982\u679c\u8981\u6e05\u7a7a\u63a5\u6536\u5230\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>serial.Serial().reset_input_buffer()<\/code>\u65b9\u6cd5\u3002\u8fd9\u5c06\u6e05\u7a7a\u8f93\u5165\u7f13\u51b2\u533a\uff0c\u786e\u4fdd\u540e\u7eed\u8bfb\u53d6\u7684\u6570\u636e\u4e0d\u53d7\u4e4b\u524d\u6570\u636e\u7684\u5f71\u54cd\u3002\u786e\u4fdd\u5728\u64cd\u4f5c\u4e4b\u524d\u5df2\u6b63\u786e\u6253\u5f00\u4e32\u53e3\u5e76\u5b9e\u4f8b\u5316Serial\u5bf9\u8c61\u3002<\/p>\n<p><strong>\u5728\u4f7f\u7528\u4e32\u53e3\u901a\u4fe1\u65f6\uff0c\u5982\u4f55\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\uff1f<\/strong><br \/>\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\uff0c\u53ef\u4ee5\u5728\u63a5\u6536\u6570\u636e\u524d\u8bbe\u7f6e\u5408\u9002\u7684\u8bfb\u53d6\u8d85\u65f6\u65f6\u95f4\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u6570\u636e\u6821\u9a8c\u548c\uff08\u5982CRC\uff09\u53ef\u4ee5\u5e2e\u52a9\u9a8c\u8bc1\u63a5\u6536\u5230\u6570\u636e\u7684\u51c6\u786e\u6027\u3002\u5b9a\u671f\u6e05\u7a7a\u7f13\u51b2\u533a\u4e5f\u80fd\u9632\u6b62\u65e7\u6570\u636e\u5e72\u6270\u65b0\u7684\u6570\u636e\u8bfb\u53d6\u3002<\/p>\n<p><strong>\u5982\u4f55\u5904\u7406\u4e32\u53e3\u6570\u636e\u63a5\u6536\u4e2d\u7684\u5f02\u5e38\u60c5\u51b5\uff1f<\/strong><br \/>\u5728\u4e32\u53e3\u901a\u4fe1\u4e2d\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5f02\u5e38\u60c5\u51b5\uff0c\u4f8b\u5982\u8bbe\u5907\u65ad\u5f00\u6216\u6570\u636e\u4f20\u8f93\u9519\u8bef\u3002\u53ef\u4ee5\u901a\u8fc7\u5f02\u5e38\u5904\u7406\u673a\u5236\uff08\u5982try-except\u8bed\u53e5\uff09\u6765\u6355\u6349\u8fd9\u4e9b\u9519\u8bef\u3002\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u91cd\u8bd5\u673a\u5236\uff0c\u786e\u4fdd\u5728\u53d1\u751f\u9519\u8bef\u65f6\u80fd\u591f\u91cd\u65b0\u5c1d\u8bd5\u8bfb\u53d6\u6570\u636e\uff0c\u5e76\u5728\u5fc5\u8981\u65f6\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7\u4ee5\u4f9b\u5206\u6790\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u6e05\u7a7a\u4e32\u53e3\u63a5\u6536\u5230\u7684\u6570\u636e\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528flushInput()\u3001\u901a\u8fc7\u8bfb\u53d6\u5e76\u4e22\u5f03\u6240\u6709\u63a5\u6536\u5230\u7684 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