{"id":1016769,"date":"2024-12-27T12:19:25","date_gmt":"2024-12-27T04:19:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1016769.html"},"modified":"2024-12-27T12:19:27","modified_gmt":"2024-12-27T04:19:27","slug":"python-%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e8%87%aa%e5%8a%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1016769.html","title":{"rendered":"python \u5982\u4f55\u5b9e\u73b0\u81ea\u52a0"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25100217\/c21cc21d-281d-45a0-b542-654e52722864.webp\" alt=\"python \u5982\u4f55\u5b9e\u73b0\u81ea\u52a0\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u81ea\u52a0\u64cd\u4f5c\u53ef\u4ee5\u901a\u8fc7\u4e09\u79cd\u4e3b\u8981\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u3001\u4f7f\u7528<code>+=<\/code>\u8fd0\u7b97\u7b26\u3001\u4ee5\u53ca\u901a\u8fc7\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5b9e\u73b0<\/strong>\u3002\u5728\u8fd9\u4e09\u79cd\u65b9\u6cd5\u4e2d\uff0c<code>+=<\/code>\u8fd0\u7b97\u7b26\u662f\u6700\u5e38\u7528\u4e14\u6700\u7b80\u6d01\u7684\u4e00\u79cd\u3002\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u6574\u6570\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5176\u4ed6\u53ef\u53d8\u5bf9\u8c61\uff0c\u5982\u5217\u8868\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e09\u79cd\u65b9\u6cd5\u7684\u5b9e\u73b0\u4e0e\u5e94\u7528\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26<\/p>\n<\/p>\n<p><p>Python\u4e2d\u6ca1\u6709\u50cfC\u8bed\u8a00\u90a3\u6837\u7684\u81ea\u589e\u8fd0\u7b97\u7b26\uff08\u5982<code>++<\/code>\uff09\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8d4b\u503c\u8fd0\u7b97\u7b26\u6765\u5b9e\u73b0\u7c7b\u4f3c\u7684\u6548\u679c\u3002\u901a\u8fc7\u5c06\u53d8\u91cf\u52a0\u4e0a\u4e00\u4e2a\u56fa\u5b9a\u503c\uff0c\u7136\u540e\u5c06\u7ed3\u679c\u91cd\u65b0\u8d4b\u7ed9\u53d8\u91cf\u672c\u8eab\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u81ea\u52a0\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u5b9e\u73b0\u81ea\u52a0<\/p>\n<p>num = 5<\/p>\n<p>num = num + 1<\/p>\n<p>print(num)  # \u8f93\u51fa 6<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u76f4\u89c2\u6613\u61c2\uff0c\u9002\u5408\u521d\u5b66\u8005\u3002\u4f46\u5728\u590d\u6742\u7684\u8ba1\u7b97\u4e2d\uff0c\u4ee3\u7801\u53ef\u80fd\u4f1a\u663e\u5f97\u5197\u957f\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528<code>+=<\/code>\u8fd0\u7b97\u7b26<\/p>\n<\/p>\n<p><p><code>+=<\/code>\u662fPython\u4e2d\u7684\u52a0\u6cd5\u8d4b\u503c\u8fd0\u7b97\u7b26\uff0c\u5b83\u7b80\u5316\u4e86\u81ea\u52a0\u64cd\u4f5c\uff0c\u5e76\u4e14\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3002\u8fd9\u4e2a\u8fd0\u7b97\u7b26\u53ef\u4ee5\u7528\u4e8e\u6570\u5b57\u3001\u5b57\u7b26\u4e32\u548c\u5217\u8868\u7b49\u591a\u79cd\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u4f7f\u7528 `+=` \u8fd0\u7b97\u7b26\u5b9e\u73b0\u81ea\u52a0<\/p>\n<p>num = 5<\/p>\n<p>num += 1<\/p>\n<p>print(num)  # \u8f93\u51fa 6<\/p>\n<h2><strong>`+=` \u8fd0\u7b97\u7b26\u7528\u4e8e\u5b57\u7b26\u4e32<\/strong><\/h2>\n<p>text = &quot;Hello&quot;<\/p>\n<p>text += &quot; World&quot;<\/p>\n<p>print(text)  # \u8f93\u51fa &quot;Hello World&quot;<\/p>\n<h2><strong>`+=` \u8fd0\u7b97\u7b26\u7528\u4e8e\u5217\u8868<\/strong><\/h2>\n<p>my_list = [1, 2, 3]<\/p>\n<p>my_list += [4, 5]<\/p>\n<p>print(my_list)  # \u8f93\u51fa [1, 2, 3, 4, 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><code>+=<\/code>\u8fd0\u7b97\u7b26\u7684\u4f18\u70b9\u5728\u4e8e\u8bed\u6cd5\u7b80\u6d01\uff0c\u4ee3\u7801\u6613\u8bfb\uff0c\u662fPython\u4e2d\u63a8\u8350\u7684\u81ea\u52a0\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u901a\u8fc7\u81ea\u5b9a\u4e49\u51fd\u6570\u5b9e\u73b0<\/p>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u901a\u8fc7\u51fd\u6570\u6765\u5b9e\u73b0\u81ea\u52a0\u64cd\u4f5c\uff0c\u4ee5\u4fbf\u4e8e\u4ee3\u7801\u7684\u91cd\u7528\u548c\u903b\u8f91\u7684\u5c01\u88c5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5b9a\u4e49\u81ea\u52a0\u51fd\u6570<\/p>\n<p>def increment(value, amount=1):<\/p>\n<p>    return value + amount<\/p>\n<h2><strong>\u4f7f\u7528\u51fd\u6570\u5b9e\u73b0\u81ea\u52a0<\/strong><\/h2>\n<p>num = 5<\/p>\n<p>num = increment(num)<\/p>\n<p>print(num)  # \u8f93\u51fa 6<\/p>\n<h2><strong>\u81ea\u5b9a\u4e49\u589e\u91cf<\/strong><\/h2>\n<p>num = increment(num, 3)<\/p>\n<p>print(num)  # \u8f93\u51fa 9<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u5b9a\u4e49\u81ea\u52a0\u7684\u589e\u91cf\uff0c\u5e76\u5728\u4e0d\u540c\u7684\u60c5\u5883\u4e0b\u91cd\u590d\u4f7f\u7528\u8fd9\u6bb5\u903b\u8f91\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001Python\u4e2d\u81ea\u52a0\u64cd\u4f5c\u7684\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n<ol>\n<li>\n<p><strong>\u5faa\u73af\u8ba1\u6570\u5668<\/strong>\uff1a\u5728\u5faa\u73af\u4e2d\uff0c\u5e38\u5e38\u9700\u8981\u5bf9\u8ba1\u6570\u5668\u8fdb\u884c\u81ea\u52a0\u64cd\u4f5c\u3002<code>for<\/code>\u5faa\u73af\u548c<code>while<\/code>\u5faa\u73af\u4e2d\u90fd\u53ef\u4ee5\u4f7f\u7528<code>+=<\/code>\u6765\u66f4\u65b0\u8ba1\u6570\u5668\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u7d2f\u52a0\u6c42\u548c<\/strong>\uff1a\u5728\u9700\u8981\u5bf9\u591a\u4e2a\u6570\u503c\u8fdb\u884c\u7d2f\u52a0\u65f6\uff0c\u81ea\u52a0\u64cd\u4f5c\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u5de5\u5177\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u5b57\u7b26\u4e32\u62fc\u63a5<\/strong>\uff1a\u5728\u52a8\u6001\u751f\u6210\u5b57\u7b26\u4e32\u65f6\uff0c<code>+=<\/code>\u8fd0\u7b97\u7b26\u53ef\u4ee5\u7528\u4e8e\u5b57\u7b26\u4e32\u62fc\u63a5\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u5217\u8868\u6269\u5c55<\/strong>\uff1a\u5f53\u9700\u8981\u5728\u5217\u8868\u672b\u5c3e\u6dfb\u52a0\u5143\u7d20\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528<code>+=<\/code>\u64cd\u4f5c\u7b26\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n<p><p>\u4e94\u3001Python\u4e2d\u81ea\u52a0\u64cd\u4f5c\u7684\u6ce8\u610f\u4e8b\u9879<\/p>\n<\/p>\n<ol>\n<li>\n<p><strong>\u4e0d\u53ef\u53d8\u5bf9\u8c61<\/strong>\uff1a\u5bf9\u4e8e\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff08\u5982\u6574\u6570\u548c\u5b57\u7b26\u4e32\uff09\uff0c\u6bcf\u6b21\u8fdb\u884c\u81ea\u52a0\u64cd\u4f5c\u65f6\uff0c\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u5728\u539f\u5bf9\u8c61\u4e0a\u4fee\u6539\u3002\u8fd9\u662f\u56e0\u4e3a\u4e0d\u53ef\u53d8\u5bf9\u8c61\u7684\u7279\u6027\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u53ef\u53d8\u5bf9\u8c61<\/strong>\uff1a\u5bf9\u4e8e\u53ef\u53d8\u5bf9\u8c61\uff08\u5982\u5217\u8868\uff09\uff0c\u4f7f\u7528<code>+=<\/code>\u8fdb\u884c\u81ea\u52a0\u64cd\u4f5c\u65f6\uff0c\u5217\u8868\u4f1a\u5728\u539f\u5730\u4fee\u6539\uff0c\u800c\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><strong>\u4ee3\u7801\u53ef\u8bfb\u6027<\/strong>\uff1a\u867d\u7136Python\u652f\u6301\u591a\u79cd\u81ea\u52a0\u65b9\u5f0f\uff0c\u4f46\u5728\u9009\u62e9\u5b9e\u73b0\u65b9\u6cd5\u65f6\uff0c\u5e94\u8be5\u4f18\u5148\u8003\u8651\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7b80\u6d01\u6027\u3002<code>+=<\/code>\u8fd0\u7b97\u7b26\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n<p><p>\u516d\u3001\u7ed3\u8bba<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u81ea\u52a0\u64cd\u4f5c\u867d\u7136\u6ca1\u6709\u4e13\u95e8\u7684\u8fd0\u7b97\u7b26\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5176\u4e2d<code>+=<\/code>\u8fd0\u7b97\u7b26\u662f\u6700\u4e3a\u63a8\u8350\u7684\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u7b80\u6d01\uff0c\u800c\u4e14\u9002\u7528\u4e8e\u591a\u79cd\u6570\u636e\u7c7b\u578b\u3002\u5728\u4f7f\u7528\u81ea\u52a0\u64cd\u4f5c\u65f6\uff0c\u5e94\u6ce8\u610f\u5bf9\u8c61\u7684\u53ef\u53d8\u6027\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u9519\u8bef\u3002\u901a\u8fc7\u5408\u7406\u8fd0\u7528\u81ea\u52a0\u64cd\u4f5c\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u53d8\u91cf\u81ea\u52a0\u64cd\u4f5c\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u7684\u8d4b\u503c\u64cd\u4f5c\u5b9e\u73b0\u53d8\u91cf\u81ea\u52a0\u3002\u901a\u5e38\uff0c\u4f7f\u7528<code>+=<\/code>\u8fd0\u7b97\u7b26\u6765\u5b9e\u73b0\u81ea\u52a0\uff0c\u4f8b\u5982\uff1a<code>x += 1<\/code>\uff0c\u8fd9\u5c06\u628a\u53d8\u91cf<code>x<\/code>\u7684\u503c\u589e\u52a01\u3002\u6b64\u5916\uff0c\u60a8\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>x = x + 1<\/code>\u7684\u65b9\u5f0f\u6765\u5b8c\u6210\u540c\u6837\u7684\u64cd\u4f5c\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u5f0f\u4e3b\u8981\u53d6\u51b3\u4e8e\u4e2a\u4eba\u7f16\u7801\u98ce\u683c\u548c\u5177\u4f53\u573a\u666f\u3002<\/p>\n<p><strong>\u81ea\u52a0\u64cd\u4f5c\u5728Python\u4e2d\u53ef\u4ee5\u7528\u4e8e\u54ea\u4e9b\u573a\u666f\uff1f<\/strong><br \/>\u81ea\u52a0\u64cd\u4f5c\u901a\u5e38\u7528\u4e8e\u5faa\u73af\u3001\u8ba1\u6570\u5668\u6216\u7d2f\u52a0\u5668\u7b49\u573a\u666f\u3002\u5728\u9700\u8981\u8ddf\u8e2a\u67d0\u4e2a\u503c\u7684\u53d8\u5316\u6216\u5728\u8fed\u4ee3\u8fc7\u7a0b\u4e2d\u66f4\u65b0\u8ba1\u6570\u65f6\uff0c\u4f7f\u7528\u81ea\u52a0\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\u5e76\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002\u4f8b\u5982\uff0c\u5728for\u5faa\u73af\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u81ea\u52a0\u6765\u7edf\u8ba1\u7b26\u5408\u6761\u4ef6\u7684\u5143\u7d20\u6570\u91cf\u3002<\/p>\n<p><strong>Python\u4e2d\u81ea\u52a0\u64cd\u4f5c\u7684\u6027\u80fd\u5982\u4f55\uff1f<\/strong><br \/>Python\u4e2d\u81ea\u52a0\u64cd\u4f5c\u7684\u6027\u80fd\u901a\u5e38\u662f\u975e\u5e38\u9ad8\u6548\u7684\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528<code>+=<\/code>\u8fd0\u7b97\u7b26\u65f6\u3002\u8fd9\u662f\u56e0\u4e3a\u8be5\u8fd0\u7b97\u7b26\u76f4\u63a5\u5bf9\u539f\u59cb\u5bf9\u8c61\u8fdb\u884c\u64cd\u4f5c\uff0c\u800c\u4e0d\u662f\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u3002\u56e0\u6b64\uff0c\u5728\u5904\u7406\u5927\u6570\u636e\u91cf\u65f6\uff0c\u4f7f\u7528\u81ea\u52a0\u64cd\u4f5c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6267\u884c\u6548\u7387\uff0c\u5c24\u5176\u662f\u5728\u5faa\u73af\u548c\u590d\u6742\u8ba1\u7b97\u4e2d\u3002<\/p>\n<p><strong>\u662f\u5426\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u81ea\u52a0\u64cd\u4f5c\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u91cd\u8f7d\u8fd0\u7b97\u7b26\u6765\u5b9e\u73b0\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u81ea\u52a0\u64cd\u4f5c\u3002\u901a\u8fc7\u5b9a\u4e49<code>__iadd__<\/code>\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u6307\u5b9a\u5f53\u4f7f\u7528<code>+=<\/code>\u8fd0\u7b97\u7b26\u65f6\uff0c\u5982\u4f55\u5904\u7406\u5bf9\u8c61\u7684\u81ea\u52a0\u903b\u8f91\u3002\u8fd9\u4f7f\u5f97\u7528\u6237\u53ef\u4ee5\u4e3a\u81ea\u5b9a\u4e49\u7c7b\u5b9e\u73b0\u7279\u5b9a\u7684\u884c\u4e3a\uff0c\u589e\u5f3a\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u81ea\u52a0\u64cd\u4f5c\u53ef\u4ee5\u901a\u8fc7\u4e09\u79cd\u4e3b\u8981\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u3001\u4f7f\u7528+=\u8fd0\u7b97\u7b26\u3001\u4ee5\u53ca\u901a\u8fc7\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5b9e\u73b0\u3002 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