python - WSGIApplication 处理程序的默认值？

Question

我有以下代码:

class MyHandler(webapp.RequestHandler):
    def get(self, page_text, page=1): # page default value is 1, but it doesn't work

application = webapp.WSGIApplication([('/something/(page(\d+))?/?', MyHandler)], debug=True)

它应该捕获如下 URL:

/something/
/something/page1
/something/page1/
/something/page2
/something/page2/
/something/pageN
/something/pageN/

当使用第一个 URL (/something/) 时，我仍然期望 page 等于 1，但实际上 page 等于无。为什么会这样？

Answer 1

只是等待一些正则表达式专家回答的解决方法:

class MyHandler(webapp.RequestHandler):
    def get(self, page_text = None, page = 1)

application = webapp.WSGIApplication([('/something/', MyHandler)
                                     ('/something/(page(\d+))?/?',MyHandler)], 
                                     debug=True)