{"id":36,"date":"2023-12-18T15:07:59","date_gmt":"2023-12-18T07:07:59","guid":{"rendered":"http:\/\/blog.thirdbody.cn\/?p=36"},"modified":"2023-12-18T15:07:59","modified_gmt":"2023-12-18T07:07:59","slug":"python%e4%b8%ad%e7%9a%84%e8%b5%8b%e5%80%bc%e6%93%8d%e4%bd%9c%e3%80%81%e6%b5%85%e6%8b%b7%e8%b4%9d%e5%92%8c%e6%b7%b1%e6%8b%b7%e8%b4%9d","status":"publish","type":"post","link":"http:\/\/blog.thirdbody.cn\/index.php\/2023\/12\/18\/python%e4%b8%ad%e7%9a%84%e8%b5%8b%e5%80%bc%e6%93%8d%e4%bd%9c%e3%80%81%e6%b5%85%e6%8b%b7%e8%b4%9d%e5%92%8c%e6%b7%b1%e6%8b%b7%e8%b4%9d\/","title":{"rendered":"Python\u4e2d\u7684\u8d4b\u503c\u64cd\u4f5c\u3001\u6d45\u62f7\u8d1d\u548c\u6df1\u62f7\u8d1d"},"content":{"rendered":"<h3>1. \u53ef\u53d8\u5bf9\u8c61\u548c\u4e0d\u53ef\u53d8\u5bf9\u8c61<\/h3>\n<p>\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3Python\u4e2d\u7684\u6df1\u62f7\u8d1d\u3001\u6d45\u62f7\u8d1d\u4ee5\u53ca\u8d4b\u503c\u64cd\u4f5c\u7684\u533a\u522b\uff0c\u9996\u5148\u5f97\u719f\u6089Python\u4e2d\u7684\u5bf9\u8c61\u7c7b\u578b\u3002Python\u4e2d\u7684\u7c7b\u578b\u53ef\u4ee5\u5206\u4e3a<strong>\u53ef\u53d8\u7c7b\u578b<\/strong>\u548c<strong>\u4e0d\u53ef\u53d8\u7c7b\u578b<\/strong>\u4e24\u79cd\uff1a<\/p>\n<ul>\n<li>\n<p>\u4e0d\u53ef\u53d8\u5bf9\u8c61<\/p>\n<p>\u4e0d\u53ef\u53d8\u5bf9\u8c61\u7684\u503c\u4e00\u65e6\u5b9a\u4e49\u5c31\u4e0d\u80fd\u66f4\u6539\uff0c\u82e5\u5f3a\u884c\u6539\u53d8\u4e0d\u53ef\u53d8\u5bf9\u8c61\u7684\u503c\uff0c\u7531\u4e8e\u5176\u503c\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u5219\u4f1a\u91cd\u65b0\u5206\u914d\u4e00\u5757\u5185\u5b58\uff0c\u5c06\u65b0\u7684\u503c\u5b58\u5165\u8fd9\u5757\u65b0\u7684\u5185\u5b58\u4e2d\uff0c\u518d\u5c06\u53d8\u91cf\u6307\u5411\u65b0\u7684\u5185\u5b58\u5730\u5740\u3002\u5e38\u89c1\u7684\u4e0d\u53ef\u53d8\u7c7b\u578b\u5305\u62ec<strong>\u5143\u7ec4<\/strong>\u3001<strong>\u6570\u503c\u7c7b\u578b<\/strong>\u3001<strong>\u5b57\u7b26\u4e32<\/strong>\u7b49<\/p>\n<pre><code class=\"language-python\">a = 1\nid1 = id(a)\n\na = 2   # \u6539\u53d8\u4e0d\u53ef\u53d8\u5bf9\u8c61a\u7684\u503c\nid2 = id(a)\nprint(id1 == id2)<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/cdn.thirdbody.cn\/%E4%B8%8D%E5%8F%AF%E5%8F%98%E5%AF%B9%E8%B1%A1.png\" alt=\"\" \/><\/p>\n<\/li>\n<li>\n<p>\u53ef\u53d8\u5bf9\u8c61<\/p>\n<p>\u4e0e\u4e0d\u53ef\u53d8\u5bf9\u8c61\u76f8\u53cd\uff0c<strong>\u53ef\u53d8\u5bf9\u8c61<\/strong>\u7684\u503c\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u800c\u4e0d\u6539\u53d8\u5176\u5728\u5185\u5b58\u4e2d\u7684\u5730\u5740\uff0c\u5373\u53ef\u4ee5\u8fdb\u884c<strong>\u539f\u5730\u4fee\u6539<\/strong>\uff0c\u53ef\u53d8\u7c7b\u578b\u5305\u62ec<strong>\u5b57\u5178<\/strong>\u3001<strong>\u5217\u8868<\/strong>\u3001<strong>\u81ea\u5b9a\u4e49\u7c7b<\/strong>\u7b49<\/p>\n<pre><code class=\"language-python\">a = [1, 2, 3]\nid1 = id(a)\n\na[0] = 1\nid2 = id(a)\nprint(id1 == id2)<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/cdn.thirdbody.cn\/%E5%8F%AF%E5%8F%98%E5%AF%B9%E8%B1%A1.png\" alt=\"\" \/><\/p>\n<\/li>\n<li>\n<p>\u590d\u6742\u5bf9\u8c61<\/p>\n<p>\u5bf9\u4e8e\u6709\u53ef\u53d8\u5bf9\u8c61\u548c\u4e0d\u53ef\u53d8\u5bf9\u8c61\u5d4c\u5957\u800c\u6765\u7684\u590d\u6742\u5bf9\u8c61\u800c\u8a00\uff0c\u4ecd\u7136\u9075\u5faa\u4e0a\u8ff0\u7684\u89c4\u5f8b\uff1a<\/p>\n<pre><code class=\"language-python\">a = [1, 2, [3, 4]]\nid1 = [id(_) for _ in a]\nprint(f'id1: {id1}')\n\na[0] = 2\na[2].append(5)\nid2 = [id(_) for _ in a]\nprint(f'id2: {id2}')<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/cdn.thirdbody.cn\/%E5%B5%8C%E5%A5%97.png\" alt=\"\" \/><\/p>\n<\/li>\n<\/ul>\n<h3>2. \u8d4b\u503c\u64cd\u4f5c\u3001\u6df1\u62f7\u8d1d\u4e0e\u6d45\u62f7\u8d1d<\/h3>\n<p>\u5728Python\u4e2d\uff0c<strong>\u8d4b\u503c\u64cd\u4f5c<\/strong>\u3001<strong>\u6df1\u62f7\u8d1d<\/strong>\u4ee5\u53ca<strong>\u6d45\u62f7\u8d1d<\/strong>\u5728<strong>\u53ef\u53d8\u7c7b\u578b<\/strong>\u4e0e<strong>\u4e0d\u53ef\u53d8\u7c7b\u578b<\/strong>\u503c\u7684\u8868\u73b0\u662f\u4e0d\u4e00\u6837\u7684<\/p>\n<ul>\n<li>\n<h4>2.1 \u4e0d\u53ef\u53d8\u7c7b\u578b\u4e2d\u7684\u60c5\u51b5<\/h4>\n<p>\u5728\u4e0d\u53ef\u53d8\u7c7b\u578b\u4e2d\uff0c\u6bd4\u8f83\u7b80\u5355\uff0c\u4e09\u79cd\u64cd\u4f5c<strong>\u90fd\u4e0d\u4f1a<\/strong>\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\uff1a<\/p>\n<pre><code class=\"language-python\">import copy\n\na = 1\nb = a   # \u8d4b\u503c\u64cd\u4f5c\nc = copy.copy(a)    # \u6d45\u62f7\u8d1d\nd = copy.deepcopy(a)    # \u6df1\u62f7\u8d1d\n\nprint(f'id(a) equals id(b)? {id(a) == id(b)}')\nprint(f'id(a) equals id(c)? {id(a) == id(c)}')\nprint(f'id(a) equals id(d)? {id(a) == id(d)}')\n\na = 2\nprint(f'a is {a}')\nprint(f'b is {b}')\nprint(f'c is {c}')\nprint(f'd is {d}')<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/cdn.thirdbody.cn\/%E4%B8%8D%E5%8F%AF%E5%8F%98%E7%B1%BB%E5%9E%8B%E6%8B%B7%E8%B4%9D.png\" alt=\"\" \/><\/p>\n<p>\u53ef\u4ee5\u770b\u51fa\uff0c\u53d8\u91cfa, b, c, d\u7684\u5730\u5740\u90fd\u662f\u76f8\u540c\u7684\uff0c\u4f46\u662f\u7531\u4e8e\u4e0d\u53ef\u53d8\u7c7b\u578b\u7684\u7279\u6b8a\u6027\u8d28\uff0c\u867d\u7136\u56db\u4e2a\u53d8\u91cf\u5177\u6709\u76f8\u540c\u7684\u5730\u5740\uff0c\u4f46\u662f\u5f53\u6539\u53d8\u53d8\u91cfa\u7684\u503c\u65f6\uff0c\u4f1a\u65b0\u5f00\u8f9f\u5185\u5b58\u6765\u5b58\u50a8\u65b0\u503c\uff0c\u5e76\u5c06\u53d8\u91cf\u7684\u6307\u5411\u66f4\u65b0\u5230\u65b0\u5185\u5b58\u3002<\/p>\n<\/li>\n<li>\n<h4>2.2 \u53ef\u53d8\u7c7b\u578b\u4e2d\u7684\u60c5\u51b5<\/h4>\n<p>\u5728\u53ef\u53d8\u7c7b\u578b\u4e2d\uff0c<strong>\u8d4b\u503c\u64cd\u4f5c<\/strong>\u4e0d\u4f1a\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u800c<strong>\u6d45\u62f7\u8d1d<\/strong>\u548c<strong>\u6df1\u62f7\u8d1d<\/strong>\u4f1a\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\uff0c\u6240\u4ee5\u5bf9a\u7684\u6539\u53d8\u4e0d\u4f1a\u5f71\u54cd\u5230c\u548cd\uff1a<\/p>\n<pre><code class=\"language-python\">import copy\n\na = [1, 2, 3]\nb = a   # \u8d4b\u503c\u64cd\u4f5c\nc = copy.copy(a)    # \u6d45\u62f7\u8d1d\nd = copy.deepcopy(a)    # \u6df1\u62f7\u8d1d\n\nprint(f'id(a) equals id(b)? {id(a) == id(b)}')\nprint(f'id(a) equals id(c)? {id(a) == id(c)}')\nprint(f'id(a) equals id(d)? {id(a) == id(d)}')\n\na.append(4)\nprint(f'a is {a}')\nprint(f'b is {b}')\nprint(f'c is {c}')\nprint(f'd is {d}')<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/cdn.thirdbody.cn\/%E5%8F%AF%E5%8F%98%E7%B1%BB%E5%9E%8B%E6%8B%B7%E8%B4%9D.png\" alt=\"\" \/><\/p>\n<p>\u90a3\u4e48\uff0c<strong>\u6d45\u62f7\u8d1d<\/strong>\u548c<strong>\u6df1\u62f7\u8d1d<\/strong>\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff0c\u5728\u4e0a\u8ff0\u7684\u5355\u4e00\u7684\u53ef\u53d8\u7c7b\u578b\u8fd9\u79cd\u7b80\u5355\u7684\u60c5\u51b5\u4e0b\uff0c\u4f3c\u4e4e\u770b\u4e0d\u51fa\u6765\u4e24\u79cd\u62f7\u8d1d\u65b9\u5f0f\u7684\u533a\u522b\uff0c\u4f46\u5728\u4e0b\u8ff0\u7684\u590d\u6742\u7c7b\u578b\u4e2d\u5c31\u53ef\u4ee5\u770b\u51fa\u4ed6\u4eec\u7684\u533a\u522b\u4e86\u3002<\/p>\n<\/li>\n<li>\n<p>\u590d\u6742\u7c7b\u578b\u4e2d\u7684\u60c5\u51b5<\/p>\n<p>\u5728\u590d\u6742\u7c7b\u578b\u4e2d(\u6307\u57fa\u7840\u7c7b\u578b\u7684\u5d4c\u5957)\uff0c<strong>\u6d45\u62f7\u8d1d<\/strong>\u548c<strong>\u6df1\u62f7\u8d1d<\/strong>\u9075\u5faa\u4ee5\u4e0b\u89c4\u5f8b\uff1a<\/p>\n<ul>\n<li>\u5bf9\u4e8e\u6700\u5916\u5c42\u7684\u6570\u636e\u7ed3\u6784\uff0c\u65e0\u8bba\u662f<strong>\u6d45\u62f7\u8d1d<\/strong>\u8fd8\u662f<strong>\u6df1\u62f7\u8d1d<\/strong>\u90fd\u4f1a\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\uff1b<\/li>\n<li>\u5bf9\u4e8e\u975e\u6700\u5916\u5c42\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6d45\u62f7\u8d1d\u4f1a\u76f4\u63a5\u4f7f\u7528\u539f\u59cb\u6570\u636e\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u800c<strong>\u6df1\u62f7\u8d1d<\/strong>\u4f1a\u4e3a\u6240\u6709\u5c42\u7684\u6570\u636e\u90fd\u5f00\u8f9f\u5185\u5b58\u7a7a\u95f4\uff1b<\/li>\n<li>\u65e0\u8bba\u90a3\u4e00\u5c42\u6570\u636e\uff0c<strong>\u8d4b\u503c\u64cd\u4f5c<\/strong>\u90fd\u4e0d\u4f1a\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-python\">import copy\n\na = [1, 2, [3, 4]]\nb = a   # \u8d4b\u503c\u64cd\u4f5c\nc = copy.copy(a)    # \u6d45\u62f7\u8d1d\nd = copy.deepcopy(a)    # \u6df1\u62f7\u8d1d\n\nprint(f'id(a) equals id(b)? {id(a) == id(b)}')\nprint(f'id(a) equals id(c)? {id(a) == id(c)}')\nprint(f'id(a) equals id(d)? {id(a) == id(d)}')\n\na_item_id = [id(_) for _ in a]\nb_item_id = [id(_) for _ in b]\nc_item_id = [id(_) for _ in c]\nd_item_id = [id(_) for _ in d]\nprint(f'a_item_id: {a_item_id}')\nprint(f'b_item_id: {b_item_id}')\nprint(f'c_item_id: {c_item_id}')\nprint(f'd_item_id: {d_item_id}')\n\na.append(4)\na[2].append(100)\n\nprint(f'a is {a}')\nprint(f'b is {b}')\nprint(f'c is {c}')\nprint(f'd is {d}')<\/code><\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/cdn.thirdbody.cn\/%E5%A4%8D%E6%9D%82%E7%B1%BB%E5%9E%8B%E6%8B%B7%E8%B4%9D.png\" alt=\"\" \/><\/p>\n<p>\u5982\u4e0a\u7ed3\u679c\u6240\u793a\uff0cc[2]\u7684\u5185\u5b58\u5730\u5740\u548ca[2]\u76f8\u540c\uff0c\u8bf4\u660e\u6d45\u62f7\u8d1d\u4e0d\u4f1a\u4e3a\u5185\u5b58\u7684\u6570\u636e\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u800cd[2]\u7684\u5185\u5b58\u5730\u5740\u548ca[2]\u4e0d\u540c\uff0c\u6b63\u597d\u8bf4\u660e\u4e86\u6df1\u62f7\u8d1d\u4f1a\u4e3a\u5185\u5c42\u7684\u6570\u636e\u5f00\u8f9f\u65b0\u7684\u5185\u5b58\uff0c\u6545a[2]\u7684\u6539\u53d8\u4f1a\u5f71\u54cd\u5230b[2]\u548cc[2]\uff0c\u4e0d\u4f1a\u5f71\u54cd\u5230d[2]\u3002<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1. \u53ef\u53d8\u5bf9\u8c61\u548c\u4e0d\u53ef\u53d8\u5bf9\u8c61 \u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3Python\u4e2d\u7684\u6df1\u62f7\u8d1d\u3001\u6d45\u62f7\u8d1d\u4ee5\u53ca\u8d4b\u503c\u64cd\u4f5c\u7684\u533a\u522b\uff0c\u9996\u5148\u5f97\u719f\u6089Pyth [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":37,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[8,12,11,9,10],"class_list":["post-36","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python","tag-12","tag-11","tag-9","tag-10"],"_links":{"self":[{"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/posts\/36","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/comments?post=36"}],"version-history":[{"count":1,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/posts\/36\/revisions"}],"predecessor-version":[{"id":38,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/posts\/36\/revisions\/38"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/media\/37"}],"wp:attachment":[{"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/media?parent=36"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/categories?post=36"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.thirdbody.cn\/index.php\/wp-json\/wp\/v2\/tags?post=36"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}