separating files for Handler

[soujiro0725]

AppEngine for Python SDK latest

Hi, I'm trying to separate the program into many files.  In order to do so, I need to put "import handler" for handler.py file if I'm correct.

But for some reason, I keep getting errors.

main.py is

import webapp2
import os
import jinja2
import handler

template_dir = os.path.join(os.path.dirname(__file__), 'templates')
jinja_env = jinja2.Environment(loader = jinja2.FileSystemLoader(template_dir),
                               autoescape = True)
def render_str(template, **params):
    t = jinja_env.get_template(template)
    return t.render(params)
def make_secure_val(val):
    return '%s|%s' % (val, hmac.new(secret, val).hexdigest())
def check_secure_val(secure_val):
    val = secure_val.split('|')[0]
    if secure_val == make_secure_val(val):
        return val
class MainPage(Handler):
    def get(self):
        self.response.headers['Content-Type'] = 'text/plain'
        self.render('front.html', wikis = wikis[0], time = int(diff.total_seconds()))
app = webapp2.WSGIApplication([('/?', MainPage)], debug=True)

 handler.py is

import webapp2
class Handler(webapp2.RequestHandler):
    def write(self, *a, **kw):
        self.response.out.write(*a, **kw)
    def render_str(self, template, **params):
        params['user'] = self.user
        return render_str(template, **params)
    def render(self, template, **kw):
        self.write(self.render_str(template, **kw))
    def set_secure_cookie(self, name, val):
        cookie_val = make_secure_val(val)
        self.response.headers.add_header(
            'Set-Cookie',
            '%s=%s; Path=/' % (name, cookie_val))
    def read_secure_cookie(self, name):
        cookie_val = self.request.cookies.get(name)
        return cookie_val and check_secure_val(cookie_val)
    def login(self, user):
        self.set_secure_cookie('user_id', str(user.key().id()))
    def logout(self):
        self.response.headers.add_header('Set-Cookie', 'user_id=; Path=/')
    def initialize(self, *a, **kw):
        webapp2.RequestHandler.initialize(self, *a, **kw)
        uid = self.read_secure_cookie('user_id')
        self.user = uid and User.by_id(int(uid))

This raises an error,

  File "/Users/ishidasouichi/appengine_python/chword/main.py", line 28, in <module>
    class MainPage(Handler):
NameError: name 'Handler' is not defined
INFO     2012-07-12 04:40:05,243 dev_appserver.py:2904] "GET /favicon.ico HTTP/1.1" 500 - 

Looks like main.py is not reading handler.py at all.  

Could anyone point out the mistake I am making?  

soujiro0725 

[Jason Galea]

On Thu, Jul 12, 2012 at 2:50 PM, soujiro0725 <souji...@gmail.com> wrote:

AppEngine for Python SDK latest

Hi, I'm trying to separate the program into many files.  In order to do so, I need to put "import handler" for handler.py file if I'm correct.

But for some reason, I keep getting errors.

I think you've got two options..

change "import handler" to "from handler import Handler"

or

change "class MainPage(Handler):" to "class MainPage(handler.Handler):"

cheers,

J

 

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[soujiro0725]

Thanks! It's working now.