import requests

url = 'https://kyfw.12306.cn/otn/leftTicket/query?leftTicketDTO.train_date=2020-04-19&leftTicketDTO.from_station=BJP&leftTicketDTO.to_station=SHH&purpose_codes=ADULT'

response = requests.get(url)
print(response)
response.json()

import requests

url = 'https://kyfw.12306.cn/otn/leftTicket/query?leftTicketDTO.train_date=2020-04-19&leftTicketDTO.from_station=BJP&leftTicketDTO.to_station=SHH&purpose_codes=ADULT'

response = requests.get(url)
print(response)
response.json()

response.json() 调用报错 ,不知道啥原因 ,,导致这个不能往下进行,,望老师看到疑问 帮忙解答以下

补充以下 ,,下载课本的 源码程序执行 也是报同样的错误:

我也有一样的问题

官方新上传的爬虫程序只是加了一个伪随机头，不过12306还是会封。解决办法，一是利用代理IP，二是将最新的cookies写入到代码中，三是利用其它模块重写方法。

很多网友提出Process finished with exit code -1073740791 (0xC0000409)，这是因为没有爬取到数据，即data为空。

建议：官方程序时间差计算的代码有bug，不支持跨年，如19年1月减18年12月会报错，应该用datetime.datetime.fromtimestamp()替换。

附：本人已学完《零基础学python》全部内容，成功调试出书中全部代码，存在的bug已向管理员提出修改建议。初学者可加我微信共同学习交流！

微信 13661017741。

这是没有爬取到数据，即data为空，查看请求地址是否正确，另外还要加上请求头，两者缺一不可，有疑问加我微信

13661017741

《python项目开发案例集锦》11.5.3查询所有火车票信息  的query()方法中，result=response.json()语句运行时报错json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)。请老师给予指导。

发到python的版块，会有专门的技术老师给你解答

已经发了三天了，根本没有人答疑。

我发现

response = requests.get(url)

获取的response不能用json()来获取结果。相同的url通过google获取的结果为：

{"httpstatus":200,"data":{"result":["8%2FyS5zgR4C5y6bD2SOs7au4%2Fe7596F3k4UnG1O7f%2F7Ky1%2B6twpR6gw27NnUlG8UaQBl%2BOO83dunC%0ARN9a3KRvC8wWOv%2BkcIN%2FTElNzBnDos3hfp1xJ1CFmm8mzEhiEgIie98Qd%2Ba4NetwQUMRJh0dYz1Q%0AXAU%2FabsgiupHQfqa4H40KWqrSX0qQBu7VweecNVa%2FC99BiikWexbN%2FaDIIq7dwQDAMZmqcbPUbKV%0AmdSsS2cr1DtAQ1dLk9pFaVbj8Y1WXZUr%2BMMkq4vuIJiC8qwIy10actQYHPk6x1XHIZCn%2BZefcfYv%0A|预订|240000G13320|G133|VNP|SHH|VNP|SHH|11:49|18:07|06:18|Y|1QwBujd89e5%2FFyzFwbhWBXy%2F1Tlc2%2FHaJwQsLezyuKHJvBPg|20210807|3|P3|01|13|1|0|||||||||||有|有|6||O0M090|OM9|1|0||O060400021M1012500219217200006|0|||||1|#0#0|","PJxd864NiRsk6WxDZKsSqInhtSfDP8WNy1agelsX079LcqoxtU64RcF3crTzNPz3y1bviretSDb0%0A4YvD4nUpKwFw6kpaloRCqu1xcaSKF1Uf96oLUJ6xx9pm5YmZaKw8phuGptrXAPGLH40lylVu4gD%2F%0AlFeoulDb1r%2BPlKaURHlvpKwqzSIeBfR75SH5HZcSaYftrE%2FonTiySAiZD1IsTr5dKSruHngv2yO7%0AlRjTh%2F6ZHVA1We%2FfOkU9pJ9KHk8zP%2Bb%2BjPMEDqerHWRSuDSOWrhQIxbW4akH8aGsB5tK%2FWc18F%2Bs%0AAnsM9IoCUqo%3D|预订|2400000G110N|G11|VNP|AOH|VNP|AOH|12:00|16:38|04:38|Y|EfYTtUxXyP4JWA5wd%2FrWmo%2BCl1b%2Fn0LYjaIW2JR5NoC2VCMC|20210807|3|P2|01|05|1|0|||||||||||有|有|11||O090M0|O9M|1|0||O0626000219231800011M103500021|0|||||1|5#1#Q03|O062600021","2DIiNta238UDG19B46P8J6wC4uXm4NaFStTyS8SxhsVl14cKtmHr5PjRFb6EdZusCKc2FCrumMnb%0AGxnn%2FLaAj3MnPZCE%2B2UXSKcZc%2B3xEe5UB8gbxpI5CcXSkhHg4f19Cp4PHZZTMG4AI2qWYceiwp%2FE%0A%2BBZXd7Kju9L3M2Bu2sLR67xAnXr%2BbgYJSL3%2BtR42iAYNgnNKuB3e9y2308RBWvWsTzkBTPi4MTdZ%0AqFIKTC8NezjhwuMiOpCb4VzW%2B8OStXTCToDz0NuJGxUJjXVvdkI7FX9VGnaGgTnnNOtW2wYDwPVd%0ABAcSjQpV6vg%3D|预订|240000G1350H|G135|VNP|AOH|VNP|AOH|12:12|18:21|06:09|Y|jk5ri0yiBOHmllvPt3quMnbEyZjIeb37P%2BF43EUitS0mPETa|20210807|3|P4|01|13|1|0|||||||||||有|7|无||M090O0|M9O|1|1||M0969000079199800000O057600021|0|||||1|#0#0|","HMnvctWx0MBERQ217vE6DwV0Yt9X3Im6aZ696yOEy7IEL1qlhorZbiJoMBXi4I%2FSEonGlPqnnRCw%0AMtvxSbXVLz91iQjvdYhF%2FPE9luYUbbk0wMlI8axtrKvnJqfvOiPNBcZemx1w%2FtyW9afSO3zgBlVl%0AMbvWMIm2BkCnKbf2IAUfx1w6IG8RIp%2F31lE3jKkqyxLn0PTQ8nwOVvPwC2ue5Ko5D6WlCYONVW5P%0AB9oQdB3NMD9AfIbE4Zoge0mwRRuKpJ4Mp1vDLQ7izseUvptmhSFWllXq7gMVBkZ5o8bcrCXZgMMu%0A%2BeALTs5lkLE%3D|预订|240000G13710|G137|VNP|AOH|VNP|AOH|12:45|18:56|06:11|Y|hKEh2ZxlQDu3QYLC4k0DwAx0w37%2BQhxdKLH8M91BkTLFDHSk|20210807|3|P3|01|11|1|0|||||||||||有|有|16||O090M0|O9M|1|0||O0576000219215800016M100600021|0|||||1|#0#0|","rMs7tVoJWitGlW5v0vS3o0Yt2uo%2BlD30p7pvqz3tvA3u4Bde7mVGotB8WV%2BTaHdW4YfZtpsOTMMn%0AZCJZgZCtPJDt0jdAjBsqm2fwhUAfJgO94RFYByXbLiB9QLwpiuV7p9Cz4zlqcbIhEgk4HRSX6Up%2B%0AVegkh68833engRRnDHBDlQc9%2BbdKilgZuW04ln6QTRUvnb9pPtIQbVchAiGdZl4%2FNhih%2F8m5U8Zv%0A53xRwebMW0h35DqLmA2s7cgdL9jq1hn%2FjBbfUlJ26KLog7m4zEd7FgRsFv13cD6UTvP1rWoanBM3%0A|预订|2400000G1300|G13|VNP|SHH|VNP|SHH|13:00|17:35|04:35|Y|d6aUjdsIVa3coZLt0O%2FpfjhAKv70m40lTpcaVC05ov8UG%2F3d|20210807|3|P3|01|05|1|0|||||||||||有|有|16||O090M0|O9M|1|0||O0631000219233100016M104150021|0|||||1|5#1#0|","hER2y0v5d9KTh2b8gwcO4pDTzSQnjqJr3NitalNwt%2BSrWqonMtPfdvEpi1M6aO5c7oXGNzw9D2zJ%0AvdBZHfgOqVCzYQXIJ%2Fr%2FzpACWIAQH8tpBP%2FuMB3e7aekkswemLr1kV5uuOHEo%2F5I9oC1ZbdpYCds%0A%2F%2Fl0%2BHHuXU%2BrxMySwWdXsp7lgJTY%2F9vVmbJyXu%2BXtcCh90qKUO0wJdtb3Y0Plv8nRWFMOQX5XRpq%0A7M4bb1YYWKouYcRgrTcTv%2Fxvi2nUnY3IIqXWYCJLTlo3jI0W0hGl60KoJaxzAj2x3P2YVZvSplM%2B%0Ama4fa%2F%2BXvKY%3D|预订|240000G13919|G139|VNP|AOH|VNP|AOH|13:04|19:06|06:02|Y|E%2B61uK7VWnsU9GZGks3ismOMvvjBk0z1T7k0y6Z1xG8XH2NW|20210807|3|P4|01|11|1|0|||||||||||有|有|11||M0O090|MO9|1|0||M093000021O0553000219199800011|0|||||1|#0#0|","qpiJi7rgHTvvoIvOB5Z04UvImAch9Hee93zI0CfEJWVdHWZ7dttH5wADDc1ZNcpgIJEtpbBqQ93l%0AvnLhtpzFIdoME4WkdCdilmkueZ%2BjCa8Wp2JVFDv5iXHq0mxx0m8WeKof%2BaDwuFBZV4Q9tWjsJMRX%0AsiT2Qa3M%2BHA2KNSSLAkHAWZ%2BFY8KUlv%2FxMfEi8%2BuwIa6VBN1I56zccMJoc9qpm5t289kEiiXro%2BK%0A%2BjERia2UHgK7Blcv4T43%2FjSt6c%2FZLvlRqHE%2BtN0ygy8Us2KDmptyUzRC%2FJKk3sRUI4fPT6S8Iu5B%0AlXvgr6zDEQ0%3D|预订|2400000G1510|G15|VNP|AOH|VNP|AOH|14:00|18:33|04:33|Y|WXOzIAxjb0ZBigqco3mozk0jGa8G152mBYslZAWqjFnCapGO|20210807|3|P4|01|05|1|0|||||||||||有|有|16||M0O090|MO9|1|0||M103500021O0626000219231800016|0|||||1|0#1#Q03|","Iy3QtpOMR5Jwy95ahg6YRQDE3hVxjQCwxr9Kk%2FttdBQb5t74%2FQxQkW0zhtuxwFxtRYgxBidjBvQB%0A2cYKDy0yEdLeX2z8TQnx4kXdIlUwpCY9cv3SVv%2F7HNi5qK1SD%2B8cxWxkiB1SvIMh9bPxrfXPX5UB%0AdMwvTnTxAOvO6h2zTgcO9jadueywNJmMkkOvsD9ufBRqBC1TqfQwJeCSfa2gP8E9uJGEMPfbYmY%2B%0AadPjTG024Yh%2BaxygT7CcHZL52%2BpCCJsAY8R77jbzr7wDnhtUSPXp3zA7P%2BqP9EqswKLZQHMiMpLo%0AgwSuQqigkNs%3D|预订|240000G1470L|G147|VNP|AOH|VNP|AOH|14:27|20:43|06:16|Y|3PPNJvuqZtlY8VxBEBZQVFfIohoyD0Spa8VC2xLQunlbzzsZ|20210807|3|P3|01|11|1|0|||||||||||有|有|13||O0M090|OM9|1|0||O055300021M0930000219187300013|0|||||1|#1#0|","XAwSZcgUyBxvj6hl5%2FAkfzhjGnqnuoVy%2BWDeMcUbeylvHxi7wh5Hrgzvf6OoIQl5EviLTf4Rhtkw%0AIRcI7HIAtFULfmGm4gMiQf9VGeQuiMYPBuDQtgsYJFFe%2BLbKsGWk%2FbqMwYEHtRJiZ8VLIHvfSwD3%0AVxTerNP5r8wxwsQxn6W0pTn74%2FFJ9fyV%2BssfgcWdJvQbxZ7RdAQghVJg4eBgCTeJjp4%2FIkNo1Twi%0AkyysA%2Fsb52hqcKLzynAjNzij5NwFBtqqFgMFCWR7nUvueQ5PKB1zNlap7mS9Ypl6opa%2BRV%2FMHoOO%0A%2BsBM1ADgnx4%3D|预订|240000G1530N|G153|VNP|AOH|VNP|AOH|16:30|22:27|05:57|Y|rsQGWZUSwp7PzuJh76Q3hYth4SG1JCVvKgaC5Z1f%2FnmliJeD|202108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