Question

更新：我将MainHandler移动到app.py文件中并删除from handlers import MainHandler行并且它可以正常工作。显然，这与我对如何从其他文件中提取代码缺乏了解有关。

我是Python的新手，这意味着我也是Tornado的新手。我认为最简单的龙卷风应用程序。当我做以下事情时：

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, World")

事情很好。我现在修改了我的应用程序配置以使用模板。这是我的app.py：

import tornado.ioloop
import tornado.web
import os.path

from handlers import MainHandler

application = tornado.web.Application(
    [
        (r"/", MainHandler)
    ],
    template_path=os.path.join(os.path.dirname(__file__), "templates"),
    static_path=os.path.join(os.path.dirname(__file__), "static")
)

if __name__ == "__main__":
    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()

这是MainHandler：

import tornado.web

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.render("index.html")

这是index.html：

<!DOCTYPE html>
<!--[if lt IE 7 ]> <html lang="en" class="no-js ie6"> <![endif]-->
<!--[if IE 7 ]>    <html lang="en" class="no-js ie7"> <![endif]-->
<!--[if IE 8 ]>    <html lang="en" class="no-js ie8"> <![endif]-->
<!--[if IE 9 ]>    <html lang="en" class="no-js ie9"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html lang="en" class="no-js"><!--<![endif]-->
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <title>Index Page</title>
</head>
<body>
    <h1>Hello World</h1>
</body>
</html>

当我尝试访问http://localhost:8888/时，我收到以下错误，这对我来说非常神秘：

ERROR:tornado.application:Uncaught exception, closing connection.
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/iostream.py", line 341, in wrapper
    callback(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/stack_context.py", line 331, in wrapped
    raise_exc_info(exc)
  File "<string>", line 3, in raise_exc_info
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/stack_context.py", line 302, in wrapped
    ret = fn(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/httpserver.py", line 327, in _on_headers
    self.request_callback(self._request)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/web.py", line 1567, in __call__
    handler = spec.handler_class(self, request, **spec.kwargs)
TypeError: 'module' object is not callable
ERROR:tornado.application:Exception in callback functools.partial(<function wrap.<locals>.wrapped at 0x104b78d40>)
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/ioloop.py", line 458, in _run_callback
    callback()
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/stack_context.py", line 331, in wrapped
    raise_exc_info(exc)
  File "<string>", line 3, in raise_exc_info
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/stack_context.py", line 302, in wrapped
    ret = fn(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/iostream.py", line 341, in wrapper
    callback(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/stack_context.py", line 331, in wrapped
    raise_exc_info(exc)
  File "<string>", line 3, in raise_exc_info
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/stack_context.py", line 302, in wrapped
    ret = fn(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/httpserver.py", line 327, in _on_headers
    self.request_callback(self._request)
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/tornado/web.py", line 1567, in __call__
    handler = spec.handler_class(self, request, **spec.kwargs)
TypeError: 'module' object is not callable

Answer 1

好吧，经过大量的谷歌搜索后，我发现了我的问题。

首先，我必须将__init__.py添加到处理程序文件夹中，以便python将其识别为包。这看起来很随意，所以我稍后会读到它的逻辑。

其次，我必须将导入修改为from handlers.MainHandler import *，甚至认为我最理想的是from handlers import *，这样我就可以立即导入所有处理程序。现在，我将解决正在发挥作用的问题。

在为Tornado定义模板配置时，我不明白错误

1 个答案: