How do you use the item function in Python?

In Python, the item function is used to return all key-value pairs in a dictionary, returning them as tuples. The usage of the item function is as follows:

# 创建一个字典
my_dict = {"name": "Alice", "age": 25, "country": "USA"}

# 使用item函数返回所有的键值对
items = my_dict.items()

# 遍历并打印所有的键值对
for key, value in items:
    print(key, value)

The output is:

name Alice
age 25
country USA

In the example above, the items function returns an iterable object containing all the key-value pairs in the dictionary. We can use a for loop to iterate through and print these key-value pairs. In each iteration, use key and value to receive the key and value of each key-value pair.