from flask import Flask, jsonify
app = Flask(__name__)

DATA = {"message": {"en-us": "Hello World!", "zh-cn": "你好，世界！"}}

@app.route('/hello_ascii')
def hello_ascii():
    app.json.ensure_ascii = True
    return jsonify(DATA)

@app.route('/hello_no_ascii')
def hello_no_ascii():
    app.json.ensure_ascii = False
    return jsonify(DATA)

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000, debug=True)

JSONPath filter: $.message.zh-cn

hello_ascii

before:

{ "message": { "en-us": "Hello World!", "zh-cn": "你好，世界！" } }

after:

[ "你好，世界！" ]

hello_no_ascii

before:

{ "message": { "en-us": "Hello World!", "zh-cn": "你好，世界！" } }

after:

[ "菴�螂ｽ�御ｸ也阜��" ]