{"id":7614,"date":"2024-03-14T06:46:32","date_gmt":"2024-03-14T06:46:32","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-python-copy-function\/"},"modified":"2025-08-02T18:32:11","modified_gmt":"2025-08-02T18:32:11","slug":"what-is-the-usage-of-the-python-copy-function","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-python-copy-function\/","title":{"rendered":"Python copy() Function: Usage Explained"},"content":{"rendered":"<p>The copy() function is used to duplicate mutable data types like lists, dictionaries, and sets, and it returns a new object instead of a reference to the original object. Its usage is as follows:<\/p>\n<ol>\n<li>Copy the list:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>original_list = [<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>]\r\ncopied_list = original_list.copy()\r\n<span class=\"hljs-built_in\">print<\/span>(copied_list)  <span class=\"hljs-comment\"># [1, 2, 3, 4, 5]<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>Duplicate the dictionary.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>original_dict = {<span class=\"hljs-string\">'a'<\/span>: <span class=\"hljs-number\">1<\/span>, <span class=\"hljs-string\">'b'<\/span>: <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-string\">'c'<\/span>: <span class=\"hljs-number\">3<\/span>}\r\ncopied_dict = original_dict.copy()\r\n<span class=\"hljs-built_in\">print<\/span>(copied_dict)  <span class=\"hljs-comment\"># {'a': 1, 'b': 2, 'c': 3}<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>Collection duplication<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>original_set = {<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>}\r\ncopied_set = original_set.copy()\r\n<span class=\"hljs-built_in\">print<\/span>(copied_set)  <span class=\"hljs-comment\"># {1, 2, 3, 4, 5}<\/span>\r\n<\/code><\/pre>\n<p>Note: The copy() function only duplicates the object itself, so if the object contains mutable elements (such as lists, dictionaries, etc.), the copied object and the original object will share these mutable elements. Therefore, any modifications made to the mutable elements will affect both the original object and the copied object. To create a completely independent copy, you can use the deepcopy() function.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The copy() function is used to duplicate mutable data types like lists, dictionaries, and sets, and it returns a new object instead of a reference to the original object. Its usage is as follows: Copy the list: original_list = [1, 2, 3, 4, 5] copied_list = original_list.copy() print(copied_list) # [1, 2, 3, 4, 5] Duplicate [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[9814,9811,9813,9812,9810],"class_list":["post-7614","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-dictionary-copy-function","tag-duplicate-objects-python","tag-list-copy-method","tag-mutable-data-types","tag-python-copy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python copy() Function: Usage Explained - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how Python&#039;s copy() function duplicates mutable objects like lists\/dicts. 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