Python中添加元素
时间: 2024-04-29 09:18:33 浏览: 16
在Python中添加元素有多种方式,下面是两个例子:
1. 向字符串中添加元素的实例方法 [^1]。
```python
str1 = "hello"
str2 = str1 + " world" # 使用字符串拼接运算符 '+' 添加元素
print(str2) # 输出: hello world
str3 = "hello"
str3 += " world" # 使用 '+=' 添加元素
print(str3) # 输出: hello world
```
2. Python中列表元素增加的三种方式 [^2]。
```python
list1 = ["zhangsan","lisi","wangwu","laoliu"]
list2 = ["haihaihai","laoba"]
list1.extend(list2) # 使用extend方法添加元素
print(list1) # 输出: ["zhangsan","lisi","wangwu","laoliu","haihaihai","laoba"]
list3 = ["zhangsan","lisi","wangwu","laoliu"]
list3.append("laoba") # 使用append方法添加元素
print(list3) # 输出: ["zhangsan","lisi","wangwu","laoliu","laoba"]
list4 = ["zhangsan","lisi","wangwu","laoliu"]
list4.insert(2, "laoba") # 使用insert方法添加元素
print(list4) # 输出: ["zhangsan","lisi","laoba","wangwu","laoliu"]
```