NameError：未定义全局名称“q”

Question

我能够通过以下链接在谷歌应用引擎中运行Hello World程序 https://cloud.google.com/appengine/docs/python/

但是在我修改了main.py文件的代码（试用新的处理程序）后，我收到了以下错误。

Traceback (most recent call last):
  File "/home/natesan/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1535, in __call__
    rv = self.handle_exception(request, response, e)
  File "/home/natesan/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1529, in __call__
    rv = self.router.dispatch(request, response)
  File "/home/natesan/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/home/natesan/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/home/natesan/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/home/natesan/google_appengine/lib/webapp2-2.5.2/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/home/natesan/webapps/udacity1/main.py", line 29, in get
    self.request.get(q)
NameError: global name 'q' is not defined

main.py文件如下。

import webapp2

form="""
<form action="/Testform">
    <input name="q" >
    <input type="submit">
</form>
"""
class TestHandler(webapp2.RequestHandler):
    def get(self):
        self.request.get(q)
        self.response.write(q)

class MainHandler(webapp2.RequestHandler):
    def get(self):
        self.response.write(form) 

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

任何人都可以帮我解决错误。