获取错误消息'NameError:全局名称'kw'未在hello world prog中定义

Question

我有一个pythonprog,我在googles app引擎上运行.该程序抛出错误消息:(回溯)

File "/Users/patriknygren82/patriks-hello-udacity/Unit3/blog/main.py", line 36, in get
  self.write("Hello test!")
File "/Users/patriknygren82/patriks-hello-udacity/Unit3/blog/main.py", line 25, in write
self.response.out.write(*a, **kw)
NameError: global name 'kw' is not defined

简单的"hello world"程序如下所示:

import webapp2
import jinja2
import os

jinja_environment = jinja2.Environment(
                       loader=jinja2.FileSystemLoader(
                           os.path.dirname(__file__) + "/templates"), 
                           autoescape=True)

class BaseHandler(webapp2.RequestHandler):
    def write(self, *a, **kv):
        self.response.out.write(*a, **kw)

    def render_str(self, template, **params):
        t=jinja_environment.get_template(template)
        return t.render(params)

    def render(self, template, **kw):
        self.write(self.render_str(template, **kw))

class MainHandler(BaseHandler):
    def get(self):
        self.write("Hello test!")

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

有人能帮帮我吗!谢谢

Answer 1

你kv在上面那行称它,而不是kw.你可能意味着:

def write(self, *a, **kw):
    self.response.out.write(*a, **kw)