# 创建一个空字典student student = {} # 为字典添加四条键值对 student["学号"] = 20210001 student["姓名"] = "张三" student["年龄"] = 18 student["性别"] = "男" # 查看学号为“20210001”的学生是否存在该字典里 if student.get("学号") == 20210001: print("学号为20210001的学生存在于字典中") else: print("学号为20210001的学生不存在于字典中") # 增加一条键值对 student["专业"] = "交通运输" # 修改年龄为20 student["年龄"] = 20 # 清空该字典 student.clear() print(student) # 输出：{} [2024-10-29 15:39:17 | AI写代码神器 | 325点数解答]