全面剖析：深入探讨现代科技对社会生活的影响与变革

第一步：生成一个字典，关键字包含年龄，姓名，性别。 ```python info = {"年龄": 25, "姓名": "张三", "性别": "男"} ``` 第二步：生成三个字典，并把他们追加到列表中。 ```python info_list = [] info1 = {"年龄": 30, "姓名": "李四", "性别": "女"} info2 = {"年龄": 28, "姓名": "王五", "性别": "男"} info3 = {"年龄": 22, "姓名": "赵六", "性别": "女"} info_list.append(info1) info_list.append(info2) info_list.append(info3) ``` 第三步：把列表用open()写入到内存中。 ```python with open("info_list.txt", "w") as f: for info in info_list: f.write(str(info) + " ") ``` 第四步：设计一个修改模块，能够修改他们的年龄姓名性别等。修改完后追加到文件中。 ```python def modify_info(old_info, key, value): old_info[key] = value return old_info def append_to_file(file_name, info): with open(file_name, "a") as f: f.write(str(info) + " ") for info in info_list: print("修改前：", info) modified_info = modify_info(info, "年龄", 26) modified_info = modify_info(modified_info, "姓名", "钱七") modified_info = modify_info(modified_info, "性别", "女") print("修改后：", modified_info) append_to_file("info_list.txt", modified_info) ```