raise JSONDecodeError("Expecting value", s, err.value) from None json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Question

不知道错误在那,求

import json
import requests


class Baidu_translator():
    def __init__(self, troms_str):
        self.lang_detect_url = "https://fanyi.baidu.com/langdetect"
        self.troms_str = troms_str
        self.headers = {
            "User-agent ": "Mozilla/5.0 (iPad; CPU OS 11_0 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) Version/11.0 Mobile/15A5341f Safari/604.1"}
        self.trans_url = "https://fanyi.baidu.com/basetrans"

    def get_ret(self, dict_response):  # 提取翻译结果
        ret = dict_response["trans"][0]["dst"]
        return ret

    def parse_url(self, url, data):  # 发送post请求 获取响应
        response = requests.post(url, data=data, headers=self.headers)
        # 默认解码utf-8
        print(response.content.decode())
        return json.loads(response.content.decode())

    def run(self):  # 实现主要逻辑
        # 获取语言类型
        # 准备post的url地址post_data
        lang_detect_data = {"query": self.troms_str}
        # 发送post请求,获得响应   # 提取语言类型
        lang = self.parse_url(self.lang_detect_url, lang_detect_data)["lan"]

        # 准备post数据
        troms_data = {
            "query": self.troms_str,
            "from": "zh",
            "to": "en"
        } if lang == "zh" else {
            "query": self.troms_str,
            "from": "en",
            "to": "zh"
        }
        # 发送post请求 获取响应
        dict_response = self.parse_url(self.trans_url, troms_data)
        # 提取翻译的结果
        ret = self.get_ret(dict_response)
        print(ret)


if __name__ == '__main__':
    troms_str = input("输入要翻译的:")
    baidu_translator = Baidu_translator(troms_str)
    baidu_translator.run()

Answer 1

直接使用response.json() 获取返回值的json，你这里先查看返回的是不是json格式，如果不是强行转换肯定会报错。