{"id":194,"date":"2023-02-09T10:21:57","date_gmt":"2023-02-09T02:21:57","guid":{"rendered":"https:\/\/www.peijun.site\/?p=194"},"modified":"2024-01-10T10:48:22","modified_gmt":"2024-01-10T02:48:22","slug":"5-%e6%b7%b1%e6%8b%b7%e8%b4%9d%e5%92%8c%e6%b5%85%e6%8b%b7%e8%b4%9d","status":"publish","type":"post","link":"https:\/\/www.peijun.site\/index.php\/2023\/02\/09\/5-%e6%b7%b1%e6%8b%b7%e8%b4%9d%e5%92%8c%e6%b5%85%e6%8b%b7%e8%b4%9d\/","title":{"rendered":"5.\u6df1\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d"},"content":{"rendered":"<p>&nbsp;<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">'''\r\n\u6df1\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d\r\n'''\r\n\r\nimport copy\r\n\r\na = 1\r\nb = copy.copy(a) # \u6d45\u62f7\u8d1d\r\nc = copy.deepcopy(a) # \u6df1\u62f7\u8d1d\r\nprint(a is b)\r\nprint(a is c)\r\n'''\r\n&gt;&gt;&gt; True\r\n&gt;&gt;&gt; True\r\n\r\n\u4e0d\u7ba1\u5bf9\u4e8e\u6d45\u62f7\u8d1d\u3001\u8fd8\u662f\u6df1\u62f7\u8d1d\uff0c\u9488\u5bf9\u4e0d\u53ef\u53d8\u5bf9\u8c61str\u3001int\u3001tuple(\u6709\u70b9\u7279\u6b8a)\u3001boolean\uff0c\u5b83\u7684\u5185\u5b58\u5730\u5740\u662f\u4e0d\u53d8\u7684\uff0c\u62f7\u8d1d\u7684\u4ec5\u4ec5\u662f\u503c\r\n'''\r\n\r\n# copy\r\na = [1, 2, [3, 4]]\r\nb = copy.copy(a)\r\nprint(a is b)\r\nprint(a[2] is b[2])\r\n'''\r\n&gt;&gt;&gt; False\r\n&gt;&gt;&gt; True\r\n\r\n\u6d45\u62f7\u8d1d\u53ea\u62f7\u8d1d\u7b2c\u4e00\u5c42\uff0c\u6240\u4ee5b\u62f7\u8d1d\u51fa\u6765\u7684\u5185\u5b58\u5730\u5740\u662f\u4e0ea\u4e0d\u540c\u7684,\r\n\u4f46\u56e0\u4e3a\u6d45\u62f7\u8d1d\u53ea\u80fd\u62f7\u8d1d\u7b2c\u4e00\u5c42\uff0c\u6240\u4ee5b[2]\u8fd9\u4e2a\u5217\u8868\u62f7\u8d1d\u4e0d\u5230\uff0c\u6307\u5411\u7684\u5185\u5b58\u5730\u5740\u4ecd\u7136\u662fa[2]\u7684\u5185\u5b58\u5730\u5740\r\n'''\r\n\r\n# deepcopy\r\na = [1, 2, [3, 4]]\r\nb = copy.deepcopy(a)\r\nprint(a is b)\r\nprint(a[2] is b[2])\r\n\r\n'''\r\n&gt;&gt;&gt; False\r\n&gt;&gt;&gt; False\r\n\r\n\u6df1\u62f7\u8d1d\u5bf9\u4e8e\u53ef\u53d8\u7684\u5bf9\u8c61\uff0c\u5168\u90e8\u62f7\u8d1d\u4e0b\u6765\uff0c\u5168\u90e8\u90fd\u5f00\u8f9f\u4e00\u7247\u65b0\u7684\u5185\u5b58\u5730\u5740\r\n'''<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u62f7\u8d1d\u548c\u6d45\u62f7\u8d1d<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/194"}],"collection":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/comments?post=194"}],"version-history":[{"count":1,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/194\/revisions"}],"predecessor-version":[{"id":195,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/posts\/194\/revisions\/195"}],"wp:attachment":[{"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/media?parent=194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/categories?post=194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.peijun.site\/index.php\/wp-json\/wp\/v2\/tags?post=194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}