我正在尝试在以下地址运行python文件：http :
//usersignup.drawyourpets.com/。如您所见，它显示的是文件夹中的文件，但实际上并未运行它们（
编辑 ：现在，它仅返回500错误）。当我使用Google App Engine在本地运行文件时，看起来像这样：

这是对的。这就是我的文件在FTP（Filezilla）中的样子：

所以我知道他们在正确的文件夹中。

这始终与HTML文件一起使用，为了使python在浏览器中运行，我需要做什么？是否需要将某些代码添加到main.py文件中？我注意到这篇文章：

Mac Web服务器上的Python

但这并没有真正指定在何处添加此行代码：（AddHandler cgi-script .cgi .py即使那是我需要做的）。

另外，我用HostGator托管，它确实支持python，所以我知道这不是问题。

谢谢你的帮助！

编辑 ：这是我要运行的python文件main.py：

#!/usr/bin/env python
#
# Copyright 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.

# See the License for the specific language governing permissions and
# limitations under the License.
#

import webapp2
import cgi

def Build_Page(textarea_content):

form = """
<table>
    <tr>
    <td>
    <label>{0}</label>
    </td>
    <td>
    <label>Username: <input type="text" name="username"/></label>
    </td></tr>

    <tr>
    <td>
    <label>{1}</label>
    </td>
    <td>
    <label>Password: <input type="text" name="password"/></label>
    </td></tr>

    <tr>
    <td> 
    <label>{2}</label>
    </td>
    <td>
    <label>Verify Password: <input type="text" name="verify_password"/>
    </label>
    </td></tr>

    <tr>
    <td>
    <label>{3}</label>
    </td>
    <td>
    <label>Email (optional): <input type="text" name="email"/></label>
    </td></tr>

    </table>
    """
submit = "<input type = 'submit'/>"
form2 = ("<form method='post'>" + form + submit + "
</form>").format("Please enter a username",
"Please enter a password", "Passwords must match","Please enter a valid
email")

header = "<h1>User Signup</h1>"

return header + form2

class MainHandler(webapp2.RequestHandler):
    def get(self):
        content = Build_Page("")
        self.response.write(content)

    def post(self):
    # look inside the request to figure out what the user typed
        username = self.request.get("username")
        password = self.request.get("password")
        verify_password = self.request.get("verify_password")
        email = self.request.get("email")
    # if the user typed nothing at all, redirect
        if (not username) or (username.strip() == ""):
            error = "Please enter a username."
            self.response.write(error)
            self.redirect("/?error=" + cgi.escape(error, quote=True))

        if (not password) or (username.strip() == ""):
            error = "Please enter a username."
            self.response.write(error)
            self.redirect("/?error=" + cgi.escape(error, quote=True))

        """if (not username) or (username.strip() == ""):
            error = "Please enter a username."
            self.response.write(error)
            self.redirect("/?error=" + cgi.escape(error, quote=True))

        if (not username) or (username.strip() == ""):
            error = "Please enter a username."
            self.response.write(error)
            self.redirect("/?error=" + cgi.escape(error,
            quote=True))"""

        #self.write.form2    
        #message = self.request.get("message") # hello</textarea>hello
        #rotation = int(self.request.get("rotation")) # 0 
        #encrypted_message = caesar.encrypt(message, rotation) 
        #hello</textarea>hello
        #escaped_message = cgi.escape(encrypted_message) 
        # hello&lt;/textarea&gt;hello
        #content = build_page(escaped_message)
        #self.response.write(content)

        #original_form = form.format("","","","","","")
        #page footer

        #class TestHandler(webapp2.RequestHandler):
        #    """ Handles requests coming in to '/add'
        #        e.g. www.user-signup.com/add
        #    """
        #    def get(self):

app = webapp2.WSGIApplication([
    ('/', MainHandler),
    #('/', TestHandler)
], debug=True)