Google app engine Google应用程序引擎错误无效的字符串格式_Google App Engine

Google app engine Google应用程序引擎错误无效的字符串格式

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Google app engine Google应用程序引擎错误无效的字符串格式,google-app-engine,Google App Engine,大家好，我有点小问题，我出错了： "File "C:\Users\kokki\Desktop\gb1\main.py", line 36, in get self.response.out.write(greeting.date.strftime('<b>posted: %d, %h %Y </b><br>')) ValueError: Invalid format string" 有人能帮忙吗？代码如下： import cgi import datetim

大家好，我有点小问题，我出错了：

"File "C:\Users\kokki\Desktop\gb1\main.py", line 36, in get
self.response.out.write(greeting.date.strftime('<b>posted: %d, %h %Y </b><br>'))
ValueError: Invalid format string"

有人能帮忙吗？代码如下：

import cgi
import datetime
import wsgiref.handlers

from google.appengine.ext import db
from google.appengine.api import users
from google.appengine.ext import webapp

class Greeting(db.Model):
  author = db.UserProperty()
  content = db.StringProperty(multiline=True)
  date = db.DateTimeProperty(auto_now_add=True)


class MainPage(webapp.RequestHandler):
    def get(self):
        self.response.out.write('<html><body>')
        greetings = db.GqlQuery("SELECT * FROM Greeting ORDER BY date DESC LIMIT 10")
        for greeting in greetings:
            self.response.out.write(greeting.date.strftime('<b>posted: %d, %h %Y </b><br>'))         
            if greeting.author:
                self.response.out.write('<b>%s</b> wrote:' % greeting.author.nickname())
            else:
                self.response.out.write('An anonymous person wrote:')
            self.response.out.write('<blockquote>%s</blockquote>' %
                                    cgi.escape(greeting.content))
        # Write the submission form and the footer of the page
        self.response.out.write("""
              <form action="/sign" method="post">
                <div><textarea name="content" rows="3" cols="60"></textarea></div>
                <div><input type="submit" value="Sign Guestbook"></div>
              </form>
            </body>
          </html>""")

class Guestbook(webapp.RequestHandler):
  def post(self):
    greeting = Greeting()
    if users.get_current_user():
      greeting.author = users.get_current_user()
    greeting.content = self.request.get('content')
    greeting.put()
    self.redirect('/')


application = webapp.WSGIApplication([
  ('/', MainPage),
  ('/sign', Guestbook)
], debug=True)


def main():
  wsgiref.handlers.CGIHandler().run(application)


if __name__ == '__main__':
  main()

%h是strftime的无效占位符。请参阅Python 2.5.2文档中的有效格式说明符。

哪一行引发错误？请张贴完整的stacktrace。此外，下次将代码缩进4个空格，以便正确格式化。试试这个，希望这会有所帮助：这个问题看起来和。我弄错了吗？