# 列表的相关操作
# 1 example 合并操作
list1 = [1,2,3]
list2 = [4,5,6]
res = list1 + list2
print(res) # [1, 2, 3, 4, 5, 6]
# 2 example 重复操作
list1 = [1,2,3]
res = list1*2
print(res) # [1, 2, 3, 1, 2, 3]
# 3 example 列表的索引
list1 = ['张宇童', ' - ', '前沿技术博客']
print(list1[0]) # 张宇童
print(list1[-1]) # 前沿技术博客
# 4 example 列表的修改
list1 = ['hello','world']
print(list1) # ['hello', 'world']
list1[0] = 'ha lo'
print(list1) # ['ha lo', 'world']
# 5 example 字符串的切片
# list[start, end, step]
list1 = ['0', '1', '2', '3', '4', '5', '6']
print(list1[2:5]) # ['2', '3', '4']
print(list1[::2]) # ['0', '2', '4', '6']
# 6 example 列表的删除
del list1[0]
print(list1) # ['1', '2', '3', '4', '5', '6']
del list1[::3]
print(list1) # ['2', '3', '5', '6']