import json
filename='favouritenumber.json'
number=input("请输入你喜欢的数字")
with open(filename,'w') as f_obj:
json.dump(number,f_obj)
with open(filename) as f_obj1:
a = json.load(f_obj)
print("你喜欢的数字是："+a)

Traceback (most recent call last):
File "E:/PycharmProjects/untitled/Python_work/file_reader.py", line 78, in <module>
a = json.load(f_obj)
File "E:\Program Files\python\Lib\json_init_.py", line 296, in load
return loads(fp.read(),
ValueError: I/O operation on closed file.
好像是文件自动关闭了 希望大佬给我讲解一下问题所在以及之后如何避免 十分感谢