基本數據類型列表list（增刪改查）
?list 專門是用來存儲大量的數據的數據類型
?在python中使用[]中括號來表示列表
?列表是可變的數據類型，內部元素沒有任何要求
?列表： 能裝東西的東西

lis = ["張三","李四","wangwu",{1,2,3},["uan","gpc"]] print (lis)

[‘張三’, ‘李四’, ‘wangwu’, {1, 2, 3}, [‘uan’, ‘gpc’]]
添加元素
?append（）追加
?insert（）插入
?extend（）迭代添加

# 1 添加元素 # append（）追加a = ["唐僧","沙悟凈","豬八戒"] print (a) a.append("孫悟空") print(a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’]
[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’]

# 2,插入 insert（） a = ["唐僧","沙悟凈","豬八戒"] print(a) a.insert(1,"孫悟空") print(a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’]
[‘唐僧’, ‘孫悟空’, ‘沙悟凈’, ‘豬八戒’]

# 迭代添加 extend () a = ["唐僧","沙悟凈","豬八戒"] print(a) a.extend(["孫悟空","白龍馬"]) print(a) a.extend("葛鵬程") print(a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’]
[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’, ‘葛’, ‘鵬’, ‘程’]

刪除元素
?remove（）刪除一個元素
?pop(1) 索引指標刪除0，1，2，3 當（）括號為空時默認刪除最后一個
?clear() 清空
?del刪除

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) a.remove("唐僧") print (a) a.remove("如來")#字符不存在就報錯 print (a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

---

ValueError Traceback (most recent call last)
in
3 a.remove(“唐僧”)
4 print (a)
----> 5 a.remove(“如來”)#字符不存在就報錯
6 print (a)

ValueError: list.remove(x): x not in list

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) a.pop() print (a) a.pop(1) print (a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’]
[‘唐僧’, ‘豬八戒’, ‘孫悟空’]

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) a.clear() print (a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[]

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) del a[0] print (a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

修改
?列表通過索引修改

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) a[0]="如來" print(a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘如來’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) a[1:3]=["如來"] print(a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘唐僧’, ‘如來’, ‘孫悟空’, ‘白龍馬’]

a = ["唐僧","沙悟凈",["馬化騰","ma云","葛鵬程"],"豬八戒","孫悟空","白龍馬"] a[2][1] = "馬云" print(a)

[‘唐僧’, ‘沙悟凈’, [‘馬化騰’, ‘馬云’, ‘葛鵬程’], ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

a = ["唐僧","沙悟凈",["馬化騰","ma云","葛鵬程"],"豬八戒","孫悟空","白龍馬"] a[2][1] = a[2][1].replace("ma","馬") print(a)

[‘唐僧’, ‘沙悟凈’, [‘馬化騰’, ‘馬云’, ‘葛鵬程’], ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

查詢
?列表通過索引和切片進行查詢
?使用for循環進行查詢

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a) print(a[2::2]) print (a[1]) print(a[::-2])

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘豬八戒’, ‘白龍馬’]
沙悟凈
[‘白龍馬’, ‘豬八戒’, ‘唐僧’]

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] for b in a:print (b)

唐僧
沙悟凈
豬八戒
孫悟空
白龍馬

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] for b in a:for c in b:print (c)

唐
僧
沙
悟
凈
豬
八
戒
孫
悟
空
白
龍
馬

a = ["唐僧","沙悟凈","豬八戒","孫悟空","白龍馬"] print (a[3][0])

孫

a = ["唐僧","沙悟凈",["馬化騰","馬云","葛鵬程"],"豬八戒","孫悟空","白龍馬"] print (a[2][0]) print (a[2][0][1])

馬化騰
化

# range 數數 for i in range (0,11):print (i)

0
1
2
3
4
5
6
7
8
9
10

for i in range (10):print ("我愛你",i)

我愛你 0
我愛你 1
我愛你 2
我愛你 3
我愛你 4
我愛你 5
我愛你 6
我愛你 7
我愛你 8
我愛你 9

a = ["唐僧","沙悟凈","馬化騰","馬云","葛鵬程","豬八戒","孫悟空","白龍馬"] for b in range(len(a)):print (a[b])

唐僧
沙悟凈
馬化騰
馬云
葛鵬程
豬八戒
孫悟空
白龍馬

a = ["唐僧",",,","沙悟凈","馬化騰","馬云","葛鵬程","豬八戒","孫悟空","白龍馬"] print(a) a[1]=a[0] print (a)

[‘唐僧’, ‘,’, ‘沙悟凈’, ‘馬化騰’, ‘馬云’, ‘葛鵬程’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]
[‘唐僧’, ‘唐僧’, ‘沙悟凈’, ‘馬化騰’, ‘馬云’, ‘葛鵬程’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

# 3，replace （ ） 字符串替換 test = "我 、喜 、歡 打 游戲" print(test) test1=test.replace("游戲","看書") print (test1) test2 = test.replace(" ","") #去掉所有空格 print (test2) test2 = test.replace("、","\n") print (test2)

我 、喜 、歡 打 游戲
我 、喜 、歡 打 看書
我、喜、歡打游戲
我
喜
歡 打 游戲

a = ["呵呵","哈哈","嘻嘻","嘿嘿"] b = ["3","4","5","6"] d = ["呵呵11","哈哈11","嘻嘻11","嘿嘿11"] c =[] c.extend(d) for i in range (4):text =a [i]times=int(b[i])for time in range(times):gpc1 = (text+str(time+1))c.append(gpc1)print(c)

[‘呵呵11’, ‘哈哈11’, ‘嘻嘻11’, ‘嘿嘿11’, ‘呵呵1’, ‘呵呵2’, ‘呵呵3’, ‘哈哈1’, ‘哈哈2’, ‘哈哈3’, ‘哈哈4’, ‘嘻嘻1’, ‘嘻嘻2’, ‘嘻嘻3’, ‘嘻嘻4’, ‘嘻嘻5’, ‘嘿嘿1’, ‘嘿嘿2’, ‘嘿嘿3’, ‘嘿嘿4’, ‘嘿嘿5’, ‘嘿嘿6’]

# 迭代添加 extend () a = ["唐僧","沙悟凈","豬八戒"] print(a) a.extend(["孫悟空","白龍馬"]) print(a)

[‘唐僧’, ‘沙悟凈’, ‘豬八戒’]
[‘唐僧’, ‘沙悟凈’, ‘豬八戒’, ‘孫悟空’, ‘白龍馬’]

總結

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