Python 3.9+ 类型.Collection、元组、类型.Iterable

Python 3.9+中引入了一些新的类型，比如Collection、元组和Iterable。这些类型为我们在处理数据结构和迭代器时提供了更多的灵活性和便利性。在本文中，我们将介绍这些类型的特点，并通过示例代码来说明它们的用法。

python
from typing import Collection
def process_collection(collection: Collection[int]):
    for item in collection:
        print(item)
    if 1 in collection:
        print("1 exists in the collection")
    collection.add(5)
    print(f"Size of the collection: {len(collection)}")
my_collection = {1, 2, 3, 4}
process_collection(my_collection)

python
from typing import Tuple
def process_tuple(data: Tuple[str, int, float]):
    print(f"Name: {data[0]}")
    print(f"Age: {data[1]}")
    print(f"Height: {data[2]}")
my_tuple = ("John", 25, 1.75)
process_tuple(my_tuple)

python
from typing import Iterable
def process_iterable(data: Iterable[str]):
    for item in data:
        print(item)
my_iterable = ["apple", "banana", "cherry"]
process_iterable(my_iterable)