attribute error

[Mike Meyer]

In <433C473B.9050901 at grads.ece.mcmaster.ca>, M.N.A.Smadi <smadim2 at grads.ece.mcmaster.ca> typed:
> This has nothing to do with how the argument is passed.  It is prob 
> something wrong with str.pop in my python because when i run python and type
> import os
> import string
> x = '1 2 3'
> x.pop()
> 
> i get the following error
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> AttributeError: 'str' object has no attribute 'pop'

The only thing wrong with str.pop is that you're trying to invoke
it. The interpreter is telling you that string doesn't *have* a pop
method. The interpreter is right. Strings are immutable, so "pop"
doesn't make any sense for them.

	<mike

> 
> Mike Meyer wrote:
> 
> >In <433C4402.6050408 at grads.ece.mcmaster.ca>, M.N.A.Smadi <smadim2 at grads.ece.mcmaster.ca> typed:
> >  
> >
> >>HI;
> >>
> >>I am  having the following error:
> >>
> >>AttributeError: 'str' object has no attribute 'pop'
> >>
> >>am using Python 2.3.4 and am importing the following libraries:
> >>
> >>import sys, os, inspect
> >>from Asterisk import Manager, BaseException, Config
> >>import Asterisk.Util
> >>
> >>The code being executed is:
> >>    if command not in commands:
> >>        raise ArgumentsError('invalid arguments.')
> >>
> >>
> >>
> >>    if command == 'usage':
> >>        return usage(argv[0], sys.stdout)
> >>
> >>    manager = Manager.Manager(*Config.Config().get_connection())
> >>
> >>    if command == 'actions':
> >>        show_actions()
> >>
> >>    if command == 'help':
> >>        if len(argv) < 3:
> >>            raise ArgumentsError('please specify an action.')
> >>
> >>        show_actions(argv[2])
> >>
> >>    elif command == 'action':
> >>        if len(argv) < 3:
> >>            raise ArgumentsError('please specify an action.')
> >>
> >>        try:
> >>            execute_action(manager, argv[2:])
> >>        except TypeError, e:
> >>            print "Bad arguments specified. Help for %s:" % (argv[2],)
> >>            show_actions(argv[2])
> >>
> >>    elif command == 'command':
> >>        execute_action('command', argv[2])
> >>    
> >>
> >
> >This should be execute_action('command', argv[2:]), with the ':' added.
> >
> >	<mike
> >
> >  
> >
> >>def execute_action(manager, argv):
> >>    method_name = argv.pop(0).lower()
> >>
> >>
> >>
> >>but i always thought that something like this will be standard stuff.
> >>Any ideas?
> >>
> >>
> >>Mike Meyer wrote:
> >>
> >>    
> >>
> >>>"M.N.A.Smadi" <smadim2 at grads.ece.mcmaster.ca> writes:
> >>>
> >>> 
> >>>
> >>>      
> >>>
> >>>>HI;
> >>>>
> >>>>I am  having the following error.  I am using someone else's code and
> >>>>all they are doing is pass an argv to a function then
> >>>>
> >>>>def execute_action(manager, argv):
> >>>>   method_name = argv.pop(0).lower()
> >>>>
> >>>>
> >>>>and am getting this strange error.
> >>>>AttributeError: 'str' object has no attribute 'pop'
> >>>>
> >>>>am using Python 2.3.4 and am importing the following libraries:
> >>>>
> >>>>import sys, os, inspect
> >>>>        
> >>>>
> >>>>from Asterisk import Manager, BaseException, Config
> >>>      
> >>>
> >>>>import Asterisk.Util
> >>>>
> >>>>but i always thought that something like this will be standard stuff.
> >>>>Any ideas?
> >>>>   
> >>>>
> >>>>        
> >>>>
> >>>Yes - show us the rest of the code. execute_action is never called in
> >>>the snippets you posted, and it's pretty clear that it's being invoked
> >>>with the wrong thing as an argument. Can you provide a minimal working
> >>>(well, executable) code sample that generates the error message you
> >>>are getting?
> >>>
> >>>Oh yeah - post the full traceback as well.
> >>>
> >>>   <mike
> >>>
> >>> 
> >>>
> >>>      
> >>>
> >>    
> >>
> >
> >  
> >
> 
> 

-- 
Mike Meyer <mwm at mired.org>		http://www.mired.org/consulting.html
Independent Network/Unix/Perforce consultant, email for more information.