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              深入Python列表-列表值訪問【每日一個知識點第161期-Python】

              序列是Python中最基本的數據結構,Python有6個序列的內置類型,但最常見的是列表和元組。今天我們來帶大家深入學習Python列表知識,首先我們要學習的是列表訪問操作。


              序列是Python中最基本的數據結構。序列中的每個元素都分配一個數字 – 它的位置,或索引,第一個索引是0,第二個索引是1,依此類推。

              Python有6個序列的內置類型,但最常見的是列表和元組。

              序列都可以進行的操作包括索引,切片,加,乘,檢查成員。

              此外,Python已經內置確定序列的長度以及確定最大和最小的元素的方法。

              列表是最常用的Python數據類型,它可以作為一個方括號內的逗號分隔值出現。

              列表的數據項不需要具有相同的類型

              創建一個列表,只要把逗號分隔的不同的數據項使用方括號括起來即可。如下所示:

              list1 = [Google, Runoob, 1997, 2000]; list2 = [1, 2, 3, 4, 5 ]; list3 = [a, b, c, d];

              與字符串的索引一樣,列表索引從0開始。列表可以進行截取、組合等。


              訪問列表中的值

              使用下標索引來訪問列表中的值,同樣你也可以使用方括號的形式截取字符,如下所示:

              實例(Python 3.0+)

              #!/usr/bin/python3 list1 = [Google, Runoob, 1997, 2000]; list2 = [1, 2, 3, 4, 5, 6, 7 ]; print (list1[0]: , list1[0]) print (list2[1:5]: , list2[1:5])

              以上實例輸出結果:

              list1[0]:  Google
              list2[1:5]:  [2, 3, 4, 5]

              Python入門每日一個知識點》欄目是馬哥教育Python年薪20萬+的學員社群特別發起,分享Python工具、Python語法、Python項目等知識點,幫助大家快速的了解Python學習,快速步入Python高薪的快車道。

              【13萬+人學習】《Python自動化全能開發從入門到精通》python基礎教程筆記全放送

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