6. 序列的其他操作

1️⃣序列相加： 把两个序列拼接在一起。

注意：只有同类型的序列才能相加（字符串+字符串、列表+列表、元组+元组）

# 列表相加
list1 = [10, 20, 30, 40]
list2 = [50, 60, 70, 80]
list3 = list1 + list2
print(list3)  # [10, 20, 30, 40, 50, 60, 70, 80]

# 元组相加
tuple1 = (10, 20, 30, 40)
tuple2 = (50, 60, 70, 80)
tuple3 = tuple1 + tuple2
print(tuple3)  # (10, 20, 30, 40, 50, 60, 70, 80)

# 字符换相加
str1 = 'hello'
str2 = 'atguigu'
str3 = str1 + str2
print(str3) # helloatguigu

# 错误示例
list1 = [10, 20, 30, 40]
str1 = 'hello'
print(list1 + str1) # 报错

2️⃣序列相乘（重复）：把序列重复指定的次数。

# 序列相乘（重复）
list1 = [10, 20, 30, 40]
list2 = list1 * 3
print(list2)  # [10, 20, 30, 40, 10, 20, 30, 40, 10, 20, 30, 40]

tuple1 = (10, 20, 30, 40)
tuple2 = tuple1 * 3
print(tuple2)  # (10, 20, 30, 40, 10, 20, 30, 40, 10, 20, 30, 40)

str1 = 'hello'
str2 = str1 * 6
print(str2)  # hellohellohellohellohellohello