无法在Heroku上运行一个非常简单的Python脚本

EDIT: A friend has told me the answer to this problem. This script is in fact working as intended, but Heroku is expecting to run this as web site while it's not a web service. That's where the problem is at!

Solution: Use a web framework, like Django. Ta-daa!

第一次使用Heroku ...脚本非常简单：获取一些JSON并显示它 .

import requests
import json

r = requests.get('http://steamcommunity.com/market/search/render/?query=&start=0&count=10&appid=570')
response = r.json()
print("Content-type: application/json")
print()
print(json.JSONEncoder().encode(response))

我有Procfile，我相信它是默认的（最基本的）：

web: python server.py --port=$PORT

和requirements.txt文件：

requests==2.6.0

成功部署后，当我在浏览器中打开它时出现此错误：

应用程序错误应用程序中发生错误，无法提供您的页面 . 请稍后重试 . 如果您是应用程序所有者，请检查日志以获取详细信息 .

错误日志（简化了JSON结果，因为它很大）：

2015-03-23T14：45：21.574258 00:00 heroku [web.1]：使用命令启动进程p ython test.py 2015-03-23T14：45：24.006938 00:00 app [web.1]：Content-类型：application / json 2015-03-23T14：45：24.007104 00:00 app [web.1]：{“pagesize”：10，“total_count”：196 15，“success”：true，“start”：0， “results_html”：“JSON正确显示”} 2015-03-23T14：45：24.006952 00:00 app [web.1] :(）2015-03-23T14：45：24.697675 00:00 heroku [web.1]：进程退出状态0 2015-03-23T14：45：24.716774 00:00 heroku [web.1]：状态从开始变为c rahedhed 2015-03-23T14：45：47.384763 00:00 heroku [router]：at =错误代码= H10 desc =“App cra shed”方法= GET path =“/”host = dry-forest-3041.herokuapp.com request_id = 402eaf01 -c1c0-4ce7-9164-20b2c8446cda fwd =“76.65.214.143”dy no = connect = service = status = 503 bytes = 2015-03-23T14：45：48.711722 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico “host = dry-forest-3041.herokuapp.com request_ id = 533995dd-50a2-403a-ba31-8c436da8c825 fw d =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015-03-23T14：45：49.222004 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”方法= GET path =“/”host = dry-forest-3041.herokuapp.com request_id = c2ee68af -f295-4ca9-b035-3a97e88f105b fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03 -23T14：45：49.502723 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry-forest-3041.herokuapp.com request_ id = ef98b883-0995-4713-b8b5-cdee908ba868 fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015-03-23T14：45：50.164614 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/”host = dry-forest-3041.herokuapp.com request_id = aabced87 -6c3b-4945-b97b-a7010a0f58dd fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：45：50.480625 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry-forest-3041.herokuapp.com request_ id = 6 c950374-d9cd-4c4a-8951-e51410cf4d7c fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015-03-23T14：45：50.910714 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”方法= GET path =“/”host = dry-forest-3041.herokuapp.com request_id = c247d63e -bb9b-4a22-8906-9c5a5a44dda9 fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：45：51.221878 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry -forest-3041.herokuapp.com request_id = 30b11aab-e7b9-493a-850f-e6fe5534a818 fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015-03-23T14：45：51.674624 00： 00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/”host = dry-forest-3041.herokuapp.com request_id = a6584cc3 -e633-4f79-82b8-42077a242069 fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：45：51.960557 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry-f orest-3041.herokuapp.com request_ id = 80236a6d-9283-49dc-ac2d-e1814152dbe8 fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015-03-23T14：48：45.637494 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/”host = dry-forest-3041.herokuapp.com request_id = a3b95988 -65ee-4a89-a477-4b9259dca26f fwd = “76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：48：45.948123 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry-forest-3041.herokuapp.com request_id = d95ea486-3615-4402-9725-fbfdc3eec9ab fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015 -03-23T14：48：46.451410 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/”host = dry-forest-3041.herokuapp.com request_id = b553aa00 -1386-479c-9bf3-06c014a92074 fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：48：46.707337 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”遇见了hod = GET path =“/ favicon.ico”host = dry-forest-3041.herokuapp.com request_ id = 846c269b-4b92-4146-8c21-78a0ec9e8ee6 fwd =“76.65.214.143”dyno = connect = servi ce = status = 503字节= 2015-03-23T14：48：47.269222 00:00 heroku [路由器]：at =错误代码= H10 desc =“App cra shed”方法= GET path =“/”host = dry-forest-3041.herokuapp .com request_id = 82ece324-fe04-42cb-835e-3a9214c36c4a fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：48：47.578761 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry-forest-3041.herokuapp.com request_ id = 7d76b309-bbae-4dc1-97eb-d8312cce9a12 fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes = 2015-03-23T14：57：57.751643 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/”host = dry -forest-3041.herokuapp.com request_id = 1eb273ec -ffd7-42ba-9c95-e92e6957449f fwd =“76.65.214.143”dyno = connect = service = status = 503 bytes = 2015-03-23T14：57：58.032275 00:00 heroku [router]：at = error code = H10 desc =“App cra shed”method = GET path =“/ favicon.ico”host = dry-forest-3041.herokuapp.com request_ id = 0061f766-4c8d-4b49-9f0e- d9174e16f5fa fwd =“76.65.214.143”dyno = connect = servi ce = status = 503 bytes =