第一步，按照姓名，年龄，性别生成三个的字典，把他们用open()写入到内存中；第二步，设计一个修改模块，修改他们的姓名 年龄 性别 并替换到内存中

第一步：生成三个字典并写入到内存中

```python
import json

name_dict = {"张三": 25, "李四": 30, "王五": 28}
age_dict = {"张三": 25, "李四": 30, "王五": 28}
gender_dict = {"张三": "男", "李四": "女", "王五": "男"}

with open("data.json", "w", encoding="utf-8") as f:
json.dump({"name": name_dict, "age": age_dict, "gender": gender_dict}, f, ensure_ascii=False)
```

第二步：设计一个修改模块，修改他们的姓名、年龄、性别并替换到内存中

```python
def update_info(name, age, gender):
with open("data.json", "r", encoding="utf-8") as f:
data = json.load(f)

data["name"][name] = age
data["age"][name] = age
data["gender"][name] = gender

with open("data.json", "w", encoding="utf-8") as f:
json.dump(data, f, ensure_ascii=False)

# 示例：修改张三的信息
update_info("张三", 26, "男")
```