python - How to encode json dump correctly in python

Question

I have a python 3 script that should get some data from a .csv-file and write it to a json file. During my processing the encoding is correct, so that german umlauts ü, ä or degree sign ° are like they are (# coding=cp1252 at the head).

But when I write the dict via json.dump() the encoding is gone...

How can I write a dict to a json file with the correct encoding?

# -*- coding: cp1252 -*-
import json
from pandas import read_csv

x={"äö": "ü°"}
print(x, json.dumps(x, indent=4))

>>>> {'äö': 'ü°'} {"\u00e4\u00f6": "\u00fc\u00b0"}

标签： pythonjsondump

Answer 1

This is happening because ä, ö, ü, and ° aren't ASCII characters.

json.dumps has an optional argument called ensure_ascii which escapes non-ASCII characters, and it's set to True by default. You can get your desired behavior by setting this to false.

x={"äö": "ü°"}
print(x, json.dumps(x, ensure_ascii=False, indent=4))