Gary Herron wrote:
> [EMAIL PROTECTED] wrote:
>> On Aug 15, 1:42 pm, mfglinux <[EMAIL PROTECTED]> wrote:
>>
>>> Hello to everybody
>>>
>>> I would like to know how to declare in python a "variable name" that
>>> it is in turn a variable
>>> In bash shell I would wrote sthg like:
>>>
>>> for x in `seq 1 3`
>>> do
>>> M$i=Material(x) #Material is a python class
>>> done
>>>
>>> Why I need this? Cause I have a python module that obliges me to build
>>> a variable called Period, which should have a variable name of
>>> summands (depends on the value of x)
>>>
>>> #Let's say x=3, then Period definition is
>>> Period=Slab(Material1(12.5)+Material2(25)+Material3(12.5)) #Slab is a
>>> python class
>>>
>>> I dont know how to automatize last piece of code for any x
>>>
>>> thank you
>>>
>>> Marcos
>>>
>> Regardless of whether or not this is a "best practice" sometimes it is
>> necessary. For example, I am looping through a dictionary to set some
>> class properties. Anyway, here is what I finally came up with:
>>
>> exec "self.%s = '%s'" % (item, plist[item])
>>
> Yuck! Not at all necessary. Use setattr instead:
>
> setattr(self, item, plist[item])
>
> That's much cleaner then an exec or eval. You may also find getattr and
> hasattr useful.
>
Or even, in some cases,
self.__dict__.update(otherdict)
if you have a dictionary of stuff to put into an object.
regards
Steve
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