需求:传统写法:简洁写法: 需求:返回一个list中所有元素的索引和内容 传统写法:test_list = ["one", "two", "three"]i = 0for item in test_list: print(i, item) i += 1 简洁写法:test_list = ["one", "two", "three"]# 简洁写法for i, item in enumerate(test_list): print(i, item)