How to do this? - newbie

[Emile van Sebille]

>>> exec (a[0]+"="+`a[1]`)
>>> x
1


Emile van Sebille
emile at fenx.com
-------------------


----- Original Message -----
From: Ronald L. Dilsavor <dilsavor at erinet.com>
Newsgroups: comp.lang.python
To: <python-list at python.org>
Sent: Thursday, February 10, 2000 7:52 PM
Subject: Re: How to do this? - newbie


>
> > From: Steve Holden <sholden at bellatlantic.net>
> > Organization: Holden Web: Intranet Technology Specialists
> > Reply-To: sholden at BellAtlantic.net
> > Newsgroups: comp.lang.python
> > Date: Thu, 10 Feb 2000 16:59:10 GMT
> > Subject: Re: How to do this? - newbie
> >
> > "Ronald L. Dilsavor" wrote:
> >>
> >> Hi,
> >> I am new to python and am quite excited about it. I spent much of
last night
> >> writing my fist code snippet and I came across 1 thing which I
could not
> >> figure out how to do.
> >>
> >> Suppose
> >>
> >>>>> a=('x',1)
> >> then how can I create an x of numerical type such that
> >>>>> print x
> >> 1
> >>
> >> - just using manipulations of a = ('x',1)
> >>
> >> Also let me know if this type of thing would not be considered best
practice
> >> in python. I thought I would need to make use of eval() but could
not find
> >> an incantation that would do it.
> >>
> >> Thanks,
> >> Ron
> > I am sure there are people reading this group who can tell you
> > how to dynamically construct something which will create a
> > variable called a and assign it the value 1.
> >
> > But it seems you really want to be able to retrieve the numeric
> > value using the symbol 'a' as a key, and that's what dictionaries
> > are for.
> >
> >>>> mydict={}  # empty dictionary
> >>>> mydict['a']=1 # enter value 1 against key 'a'
> >>>> print mydict['a'] # retrieve the value
> > 1
> >>>>
> >
> > Is *that* what you want?
> >
> > regards
> > Steve
> >
>
> In fact that is exactly what I ended up doing (using a dictionary) and
I may
> just keep it that way. I was just wondering how to do it the way I
asked.
> Ron
>
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