Moving from PHP to Python. Part Two

[Diez B. Roggisch]

Sancar Saran wrote:

> Hello Again.
> 
> I hope, I don't bug too much.
> 
> First of all. I want to Thank to everyone who respond my messages.
> 
> I was able to do some of my needs and stuck some others.
> 
> So ? I need help again.
> 
> And here my progress..
> 
> Following was my globalized registry solution
> 
> # -*- coding: utf-8 -*-
> 
> class Registry:
> 
> data = {}
> 
> def __init__(self,environ):
> self.data['env'] = environ
> self.data['init'] = 'hede'
> 
> def set_entry(self,key,data):
> self.data[key] = data
> 
> def get_entry(self,key):
> return self.data[key]
> 
> def debug(self):
> 
> r = '<pre>'
> r += repr(self.data)
> r += '</pre>'
> 
> return r
> 
> I have some questions about this code.
> 
> First of all. when execute debug function. It wont work in every request.
> 
> # -*- coding: utf-8 -*-
> 
> import os, sys, cgi, pprint
> import cgitb
> cgitb.enable()
> 
> 
> def application(environ, start_response):
> sys.path.append(environ['DOCUMENT_ROOT']+"core")
> import registry, k5
> # new registry
> 
> r = registry.Registry(environ)
> r.set_entry('hede','hodo')
> 
> #response_headers = [('Content-type',k5.headers['content-type']+';
> charset='+k5.headers['charset'])]
> #start_response(kk5.headers['status'], response_headers)
> 
> response_body = 'The request method was %s' % environ['REQUEST_METHOD']
> response_body += '<br/>'
> response_body += r.debug()
> 
> 
> status = '200 OK'
> 
> response_headers = [('Content-Type', 'text/plain'),
> ('Content-Length', str(len(response_body)))]
> 
> start_response(status, response_headers)
> 
> 
> return [response_body]
> 
> In first request I can see elements of my registry and second request it
> was shows noting. Then 3rd request I can see my registry elements again.
> next request was empty too. And it was go like that. I don't understand
> why ?
> 
> Second problem is. Formatting.
> 
> I need to see my dictionary elements like this.
> 
>    [k5req] => Array
>         (
>             [raw] => heede
>             [post] => Array
>                 (
>                 )
> 
>             [proto] => http://
>             [base_url] => http://k5.int/?
>             [bend_url] => http://k5.int/?backend/
>             [ajax_url] => http://k5.int/?ajax/
>             [domain] => k5.int
>             [path] => Array
>                 (
>                     [0] => heede
>                 )
> 
>             [location] => frontend
>             [page] => heede
>             [dom_stat] => 1
>         )
> 
> Is there any available solution (like php's print_r) or have I write to my
> own ?

import pprint

pprint.pformat({"foo" : 10})


> If I understood correctly I have to import every module in sub imported
> module.
> 
> And I want to make sure to my 5 different base module was available every
> other sub imported module.
> 
> Is there any way to this from do and forget from start ?

Not really. In python, each module must import whatever dependencies it has.

You *can* put stuff into the __builtins__-namespace, and this will make them
available in each piece of code running.

However, I (and any other sane person on this list) will *STRONGLY* advise
you against doing that - polluting this global namespace will very likely
create collisions which will re-define names and thus introduce nasty bugs.

Python has namespaces. Use them.


Diez