Python----列表的使用
示例:
names = ['aa','bb','cc','dd','ee','ff']
1.取一个元素(下标从0开始计数):
print(names[0])
输出结果:
aa
2.取多个元素:
print(names[:2])
输出结果:
['aa', 'bb']
3.追加:
names.append("ll")
print(names)
输出结果:
['aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'll']
4.插入:
names.insert(2,'ww')
print(names)
输出结果:
['aa', 'bb', 'ww', 'cc', 'dd', 'ee', 'ff', 'll']
5.修改
names[2] = 'oo'
print(names)
输出结果:
['aa', 'bb', 'oo', 'cc', 'dd', 'ee', 'ff']
6.删除
指定删除:
del names[0]
print(names)
输出结果:
['bb', 'oo', 'cc', 'dd', 'ee', 'ff']
删除最后一个:
names.pop()
print(names)
输出结果
['bb', 'oo', 'cc', 'dd', 'ee']
7.列表追加:
A = [1,2,3]
names.extend(A)
print(names)
输出结果:
['aa', 'bb', 'cc', 'dd', 'ee', 'ff', 1, 2, 3]
8.拷贝
name_copy = names.copy()
print(names)
print(name_copy)
输出结果:
['aa', 'bb', 'cc', 'dd', 'ee', 'ff']
['aa', 'bb', 'cc', 'dd', 'ee', 'ff']
9.统计
print(names.count('aa'))
10.排序
names.sort()
print(names)
11.获取下标
print(names.index('cc'))