Day 12 🧭行动：这次学习了匿名函数与变量定义 🤓体会：这两种方法都能提高代码的可读性与可维护性，在特定情况都有很大作用 🧑‍💻代码： #变量定义-指定类型注解 # abc: int = 915 # score1: float= 95.5 # hobby2: str = "python" # result: bool = True # cba: None = None # # english: list[str] = ["A","B","C"] # phones: set[str] = {"13818286739","13390875673","19161398706"} # options: dict[str,int] = {"count":34,"total":12} # goods: tuple[str,int,int] = ("水果",2,6) #匿名函数 add = lambda x,y: x+y print(add(100,200)) # 需求3：完成如下列表的排序操作，按照每一个元素的字符个数，从小到大排序； data_list = ["C++", "C", "Python", "Jack", "PHP", "Java", "Go", "JavaScript", "Rust"] print(data_list) data_list.sort(key = lambda item: len(item)) print(data_list)