python排序文件出错

Question

看着哔哩哔哩学卡在这一步不会了，请问各位老哥们这是那里操作出错？

Traceback (most recent call last):
  File "E:\pycm\yunjiang\练习100\文件类型排序.py", line 24, in <module>
    datas=stor_files(datas)
  File "E:\pycm\yunjiang\练习100\文件类型排序.py", line 13, in stor_files
    reverse=True)
TypeError: 'function' object is not iterable

```python
def read_file():
    result = []
    with open('E:\pycm/yunjiang/练习100/文件类型排序.txt', 'w', encoding='UTF-8') as fin:
        for line in fin:
            line = line[:-1]
            result.append(line.split(','))
    return result


def stor_files(datas):
    return sorted(datas,
                  key=lambda x: int(x[2]),
                  reverse=True)

def write_file(datas):
    with open('E:\pycm/yunjiang/练习100/文件类型排序.txt', 'w', encoding='UTF-8')as fout:
        for data in datas:
            fout.write(','.join(data)+'\n')


#  读取数据
datas = read_file
# 排序数据
datas=stor_files(datas)
# 写入数据
write_file(datas)

```

Answer 1

改成：

def stor_files(datas):
    tmp=sorted(datas,
                  key=lambda x: int(x[2]),
                  reverse=True)

然后再将这个tmp 结果return