google app engine redirection pages in website

i want to go from one page to another in my website using a button. my code for this is like the following:

 self.response.out.write('''<form
        action="/sign" method=post> <br><input type=submit value="go to lesson 2 ">
        </form>  
''') % self.redirect("/lesson1")

开发者_如何学JAVAnow i am in lesson one page and i want using this button to go to lesson1 page but i keep getting this error: PyDev breakpoint inconsistent dedent at line 53, column 2 Bad Indentation (7 spaces)

does any one know how to fix this?

thanks Amal

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Aside from bad indentation and an errant attempt at using %, self.redirect(...) is done for effect, not to get a string you can use to embed elsewhere. What you've got it more properly divided into a get handler (to emit the form) and a post handler to do the redirect.

An alternative is to do the redirect in the browser, using JavaScript.

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I got the correct answer using html.

I have two pages inside my website in google app engine and they are:

lesson1.py
lesson2.py

to go from lesson one to lesson using a button i put this code inside lesson1.py:

    self.response.out.write('''<form action="/lesson2" method="get">                 
    <input type="submit" value="go to lesson2" />
    </form> ''')

    application = webapp.WSGIApplication([('/', MainHandler)], debug=True)
    application = webapp.WSGIApplication([('/lesson1', MainHandler)],debug = True)

then in lesson2.py where i want to go i put this code:

application = webapp.WSGIApplication([('/', MainHandler)], debug=True)
application = webapp.WSGIApplication([('/lesson2', MainHandler)],debug = True)

an important issue is the app.yaml file mine looks like this:

application: Sign-language version: 1 
runtime: python
api_version: 1 
handlers:
   - url: /lesson2 
     script: lesson2.py

   - url: /.*  
     script: lesson1.py

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Use Preferences->Pydev->Editor and uncheck replace tabs with spaces. Tabs can be 4 spaces despite popular opinion that it should be changed to 8 spaces.