输出上的Python WSGI错误 [英] Python WSGI Error on Output

问题描述

我的python已经很生锈了，因为我已经有一段时间没有使用它了，并且遇到了一个我无法解决的问题.

My python has become quite rusty as I haven't used it for quite a while and am stuck with an issue I am not able to figure out.

python程序应接受网页发送的表单数据，并向其返回一些JSON响应代码.一切正常，除了发送数据时:

The python program should accept a form's data sent by a web page, and return some JSON response codes back to it. Everything works fine except when the data is sent:

def application(environ, start_response):
    """ Process the form data, spit out the reponse """

    # code here extracts the form 
    # data and the response code is 
    # stored in info

    # everything done, output now
    output(environ, start_response, info)


def output(environ, start_response, info):

    # debug
    print >> environ['wsgi.errors'], "BACK TO THE BROWSER"

    feedback = json.dumps(info)

    # debug
    print >> environ['wsgi.errors'], feedback

    status = "200 OK"
    headers = [('Content-Type', 'application/json; charset=UTF-8'), ('Content-Length', str(len(feedback)))]
    start_response(status, headers)
    return [feedback]

错误日志显示:

...
[wsgi:error] ...返回浏览器

...
[wsgi:error] ... BACK TO THE BROWSER

[wsgi:error] ... {错误":[1430360477881，1430233459050]}

[wsgi:error] ... {"errors": [1430360477881, 1430233459050]}

[wsgi:error] ... mod_wsgi(pid = 1654):处理WSGI脚本'/tmp/mod_wsgi-localhost:8000:0/htdocs/'时发生异常.

[wsgi:error] ... mod_wsgi (pid=1654): Exception occurred processing WSGI script '/tmp/mod_wsgi-localhost:8000:0/htdocs/'.

[wsgi:error] ... TypeError:"NoneType"对象不可迭代
...

[wsgi:error] ... TypeError: 'NoneType' object is not iterable
...

好吧，Python抱怨它期望可迭代的东西是None.但是Python在此函数中抱怨的是哪一个可迭代的事物? (请注意，我直接使用mod_wsgi而不使用任何框架/模块).

Ok, Python is complaining that something it expects to be iterable is None. But which iterable is Python complaining about in this function? (Note that I am using mod_wsgi directly without any frameworks / modules).

推荐答案

您需要返回响应:

return output(environ, start_response, info)

这篇关于输出上的Python WSGI错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！