How to convert csv to json in python?

Question

I'm very new to programming, have been learning python from past 3/4 weeks and this is one of the assignments given.

Input

A, B, C, D
1, 2, 3, 4
5, 6, 7, 8

Output

{{A:"1", B:"2", C:"3", D:"4"}, {A:"5", B:"6", C:"7", D:"8"}}

I've been trying with the code as:

import csv
import json

csvfile = open('test.csv','r')
jsonfile = open('test.json','w')

x = ("a","b","c","d")

reader = csv.DictReader(csvfile, x)
for row in reader:
    json.dump(row, jsonfile)

The output for this code comes as below:

{"a": "1", "null": ["5", "6", "7", "8", "9"], "c": "3", "b": "2", "d": "4"}

Can anyone help me on this?

Answer 1

Dump after processing whole rows.

---

import csv
import json

with open('test.csv') as f:
    reader = csv.DictReader(f)
    rows = list(reader)

with open('test.json', 'w') as f:
    json.dump(rows, f)

Answer 2

For those who like one-liners:

import csv
import json

json_data = [json.dumps(d) for d in csv.DictReader(open('file.csv'))]

Checkout this fiddle for a working example: https://pyfiddle.io/fiddle/5992b8f4-552f-4970-91b6-a52cdee16ebc/?i=true