Json With Python

Question

Tried a program -if json file already exists do nothing and if it does not exist then ask for input and write that input to file.Error is coming when I give input

import json
name="first.json"
try:
   r=open(name)
except FileNotFoundError:
   e=open(name,"w")
   a=input("Enter Name: ")
   json.dump(e,a)

Enter Name: a r=open(name) FileNotFoundError: [Errno 2] No such file or directory: 'first.json' — mudit jain
– mudit jain, Commented Mar 12, 2021 at 10:32
in function "json.dump(e,a)" first parameter is object to dump and second one is file object — user3431635
– user3431635, Commented Mar 12, 2021 at 10:32
Also,During handling of the above exception, another exception occurred: Traceback line 10, in <module> json.dump(e,a) File "C:.....\Python\Python39\lib\json_init_.py", line 179, in dump for chunk in iterable: File "C:......\Python\Python39\lib\json\encoder.py", line 438, in iterencode o = _default(o) File "C:\....Python39\lib\json\encoder.py", line 179, in default raise TypeError(f'Object of type {o.__class_.__name__} ' TypeError: Object of type TextIOWrapper is not JSON serializable — mudit jain
– mudit jain, Commented Mar 12, 2021 at 10:34

RJ Adriaansen · Accepted Answer · 2021-03-12 10:34:33Z

2

import json
name="test.json"
try:
    r=open(name)
except FileNotFoundError:
    with open(name,"w") as e:
        a=input("Enter Name: ")
        json.dump(a,e)

answered Mar 12, 2021 at 10:34

RJ Adriaansen

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Jaakkonen · Accepted Answer · 2021-03-12 10:33:42Z

0

json.dump takes data to be written into a file first and the file second.

So the code should be:

# json.dump(data, file)
json.dump(a,e)

https://docs.python.org/3/library/json.html#json.dump

answered Mar 12, 2021 at 10:33

Jaakkonen

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Андрей Беспалов · Accepted Answer · 2021-03-12 10:34:07Z

0

Probably your problem is wrong input data. Script has not any error. input {"1": 1} is worked

answered Mar 12, 2021 at 10:34

Андрей Беспалов

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