Python入门的36个例子 之 19 -> List

源代码下载：下载地址在这里

 

# 022 listNum1 = [1, 3] listNum2 = [2, 4] listStr1 = ['a', 'c'] listStr2 = ['b', 'd'] # 列表的合并 list1 = listNum1 + listStr1 for ele in list1: print ele print '/n' # 判断列表中是否包含某元素 print 'b' in list1 print 1 in list1 # 删除某个元素 for ele in list1: print ele del list1[1] for ele in list1: print ele print '/n' # 对列表进行排序 list1 = listNum1 + listNum2 + listStr1 + listStr2 for ele in list1: print ele print '/n' list1.sort() for ele in list1: print ele print '/n' # 对列表进行倒排序 list1 = listNum1 + listNum2 + listStr1 + listStr2 for ele in list1: print ele print '/n' list1.sort(reverse = True) for ele in list1: print ele print '/n' # 对列表进行逆序 list1 = listNum1 + listNum2 + listStr1 + listStr2 for ele in list1: print ele print '/n' list1.reverse() for ele in list1: print ele print '/n' # 删除列表中连续的一部分 list2 = listNum1 + listNum2 + listStr1 + listStr2 list1 = list2 list1.sort() for ele in list1: print ele print '/n' del list1[0:2] for ele in list1: print ele print '/n' # Python中列表比较的是值而不是引用 list3 = [1, 3, 'a', 'c'] list4 = listNum1 + listStr1 print list3 == list4, '/n' # 列表竟然可以比较大小 list5 = ['b', 'c'] list6 = ['a', 'z'] print list5 > list6, '/n' # 提取元素 list1 = listNum1 + listNum2 + listStr1 + listStr2 print list1 print list1[7] print list1[0:4] # 列表的拼接 list1 = [1,2,3] list2 = [2,3,4] list1 += list2 print list1, '/n' # 列表的翻倍 list1 = [1,2,3] i = 3 list1 *= i print list1 # 添加元素的两种方法 list1 = [1,2,3] list1 += [4] print list1 list1 = [1,2,3] list1.append(4) print list1 # 取得元素个数的方法 list1 = [1,2,3] print len(list1) # 取得特定元素的个数 list1 = [1,2,2,3,4,4,4] print list1.count(2) print list1.count(4), '/n' # 在列表中寻找特定的元素 list1 = ['a', 'b', 'c', 'a', 'b', 'c', 'a'] print list1.index('a') print list1.index('a', 1) # 在指定位置插入元素 list1 = ['我', '爱', '你'] for ele in list1: print ele, print '/n' list1.insert(2, '不') list1.insert(3, '爱') for ele in list1: print ele, print '/n' # 将最后放入的元素弹出 list1 = ['dudu', 'gogo', 'lulu'] print list1 list1.pop() print list1 print list1.pop() # 删除第一个匹配的元素 list1 = ['dudu', 'gogo', 'lulu', 'gogo'] print list1 list1.remove('gogo') print list1

 

output：

 

1
3
a
c


False
True
1
3
a
c
1
a
c


1
3
2
4
a
c
b
d


1
2
3
4
a
b
c
d


1
3
2
4
a
c
b
d


d
c
b
a
4
3
2
1


1
3
2
4
a
c
b
d


d
b
c
a
4
2
3
1


1
2
3
4
a
b
c
d


3
4
a
b
c
d


True

True

[1, 3, 2, 4, 'a', 'c', 'b', 'd']
d
[1, 3, 2, 4]
[1, 2, 3, 2, 3, 4]

[1, 2, 3, 1, 2, 3, 1, 2, 3]
[1, 2, 3, 4]
[1, 2, 3, 4]
3
2
3

0
3
我 爱 你

我 爱 不 爱 你

['dudu', 'gogo', 'lulu']
['dudu', 'gogo']
gogo
['dudu', 'gogo', 'lulu', 'gogo']
['dudu', 'lulu', 'gogo']