{"id":6708,"date":"2022-05-21T18:28:59","date_gmt":"2022-05-21T10:28:59","guid":{"rendered":"https:\/\/tommykwan.com\/blog\/?p=6708"},"modified":"2022-05-21T18:55:50","modified_gmt":"2022-05-21T10:55:50","slug":"list","status":"publish","type":"post","link":"https:\/\/tommykwan.com\/blog\/it\/python\/list\/","title":{"rendered":"List"},"content":{"rendered":"<blockquote><p>List \u5165\u9762\u7684\u6771\u897f\u53ef\u4ee5\u4e0d\u540cType<\/p>\n<p>List \u5165\u9762\u4ea6\u53ef\u4ee5\u6709\u53e6\u4e00\u500b List<\/p>\n<p>List \u5165\u9762\u4e0d\u540c\u7684 List \u53ef\u4ee5\u6709\u4e0d\u540c\u7684 dimension<\/p><\/blockquote>\n<pre>L=[1,\"1\",2.5,True]\r\n\r\nL[0]\r\n\r\nL[1]\r\n\r\nL[2]\r\n\r\nL[3]\r\n\r\nL[4]<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6709 size-full\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/List-python.png\" alt=\"\" width=\"300\" height=\"337\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/List-python.png 300w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/List-python-267x300.png 267w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<pre>#\u4ee5\u4e0b\u6709\u662f\u6307 L1 \u67093\u500b List (List \u4e2d List) \uff0c\u4f46count L1 \u7684length \u53ea\u6703\u67093\u500b items\r\n\r\nL1=[[1,\"1\",2.5,True,2,3]<span style=\"color: #ff0000;\">,<\/span>[4.1,\"ABC\",4]<span style=\"color: #ff0000;\">,<\/span>[7,8,9,10]]\r\n\r\n# \u53d6\u5f97 L1 \u7684 length\r\n\r\nlen(L1)\r\n\r\n# \u53d6\u5f97 L1 \u5167\u7b2c0\u500b\u5143\u7d20\u7684\u00a0 length\r\n\r\nlen(L1[0])\r\n\r\n# \u53d6\u5f97 L1 \u5167\u7b2c1\u500b\u5143\u7d20\u7684\u00a0 length\r\n\r\nlen(L1[1])\r\n\r\n# \u53d6\u5f97 L1 \u5167\u7b2c2\u500b\u5143\u7d20\u7684\u00a0 length\r\n\r\nlen(L1[2])<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6715 size-full\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/list-len-python.png\" alt=\"\" width=\"543\" height=\"345\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/list-len-python.png 543w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/list-len-python-300x191.png 300w\" sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/p>\n<p>\u4ee5\u4e0b\u6703\u793a\u7bc4\u53d6\u5f97 L1 \u7b2c\u4e00\u500b\u5143\u6578\u5167 &#8220;\u96d9\u6578&#8221;\u7684\u5143\u7d20<\/p>\n<pre>L1[0][1::2]<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6717 size-full\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/list-with-stepping-python.png\" alt=\"\" width=\"530\" height=\"157\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/list-with-stepping-python.png 530w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/list-with-stepping-python-300x89.png 300w\" sizes=\"auto, (max-width: 530px) 100vw, 530px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Append<\/h2>\n<pre>days=[\"1\",\"2\",\"3\",\"4\",\"5\",\"6\",\"7\"]\r\n\r\ndays.append(\"8\")\r\n\r\ndays<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6720 size-full\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/append-python.png\" alt=\"\" width=\"460\" height=\"168\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/append-python.png 460w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/append-python-300x110.png 300w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/p>\n<pre>#\u6ce8\u610f append \u6bcf\u6b21\u53ea\u53ef\u52a0 1 \u500b element~\r\ndays.append([\"9\",\"10\"])\r\n\r\ndays\r\n\r\nlen(days)<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6721 size-full\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/append-only-one-python.png\" alt=\"\" width=\"529\" height=\"206\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/append-only-one-python.png 529w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/append-only-one-python-300x117.png 300w\" sizes=\"auto, (max-width: 529px) 100vw, 529px\" \/><\/p>\n<p>\u5982\u679c\u60f3\u4e00\u6b21\u52a0\u591a\u65bc\u4e00\u500belement \u5165 List, \u53ef\u4ee5\u7528 &#8220;+&#8221;<\/p>\n<pre>days=[\"1\",\"2\",\"3\",\"4\",\"5\",\"6\",\"7\"]\r\n\r\ndays=days+[\"8\",\"9\",\"10\"]\r\n\r\ndays<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6723 size-full\" src=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/add-more-than-one-element-into-List-python.png\" alt=\"\" width=\"554\" height=\"164\" srcset=\"https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/add-more-than-one-element-into-List-python.png 554w, https:\/\/tommykwan.com\/blog\/wp-content\/uploads\/2022\/05\/add-more-than-one-element-into-List-python-300x89.png 300w\" sizes=\"auto, (max-width: 554px) 100vw, 554px\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>List \u5165\u9762\u7684\u6771\u897f\u53ef\u4ee5\u4e0d\u540cType List \u5165\u9762\u4ea6\u53ef\u4ee5\u6709\u53e6\u4e00\u500b List List \u5165\u9762\u4e0d\u540c\u7684 List \u53ef\u4ee5\u6709\u4e0d\u540c\u7684 dimension L=[1,&#8221;1&#8243;,2.5,True] L[0] L[1] L[2] L[3] L[4] &nbsp; #\u4ee5\u4e0b\u6709\u662f\u6307 L1 \u67093\u500b List (List \u4e2d List) \uff0c\u4f46count L1 \u7684length \u53ea\u6703\u67093\u500b items L1=[[1,&#8221;1&#8243;,2.5,True,2,3],[4.1,&#8221;ABC&#8221;,4],[7,8,9,10]] # \u53d6\u5f97 L1 \u7684 length len(L1) # \u53d6\u5f97 L1 \u5167\u7b2c0\u500b\u5143\u7d20\u7684\u00a0 length len(L1[0]) # \u53d6\u5f97 L1 \u5167\u7b2c1\u500b\u5143\u7d20\u7684\u00a0 length len(L1[1]) # \u53d6\u5f97 L1 \u5167\u7b2c2\u500b\u5143\u7d20\u7684\u00a0 length len(L1[2]) \u4ee5\u4e0b\u6703\u793a\u7bc4\u53d6\u5f97<a class=\"read-more \" href=\"https:\/\/tommykwan.com\/blog\/it\/python\/list\/\" title=\"Read More\"> <span class=\"button default\">Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-6708","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/6708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/comments?post=6708"}],"version-history":[{"count":10,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/6708\/revisions"}],"predecessor-version":[{"id":6724,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/6708\/revisions\/6724"}],"wp:attachment":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/media?parent=6708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/categories?post=6708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/tags?post=6708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}