将 JSON LINES 文件转换为 JSON 格式？

Question

I have file (around 6 GB) that each line is JSON.

{"name":"name1", "age":40, "car":null}
{"name":"name2", "age":30, "car":null}
{"name":"name3", "age":30, "car":null}

How can I convert it into a JSON array with Python?

Answer 1

import fileinput
for line in fileinput.input("test.txt", inplace=True):
    if 1 != fileinput.filelineno():
        print(',{}'.format(line), end='')
    else:
        print('[{}'.format(line), end='')
open("test.txt","a").write(']')
     

Answer 2

Load each line and save it into a list.

with open('file.txt', 'r') as in_file:
    lines = [json.loads(line) for line in in_file.readlines()]

Then you can save that to a file like with json.dump()

with open('out.json', 'w') as out_file:
    json.dump(lines, out_file)

Answer 3

如何将 .Json 文件转换为 .jsonline