Newbie: Changing a string to a class attribute.
David C. Fox
davidcfox at post.harvard.edu
Wed Sep 24 16:35:45 EDT 2003
Jacob H wrote:
> This is a very simple problem and I'm sure the answer is a no brainer.
> However my brain can't see the answer. ;)
>
> Given code like this:
>
> def exec_method(object, method):
> # object is an instantiated object, e.g. log
> # method is a string that matches a method of object, e.g.
> "update"
> # code stuff here that calls object.method, e.g. log.update()
>
> What is the best way to turn method, a string, into a valid reference
> to the actual class method? My first thought was eval(). But I can't
> do this:
>
> eval("class.method()")
>
> Eval will look for a method actually called method() and there isn't
> one. What's a good solution for this? Heck, for all I know, Python
> implicitly provides functionality to solve this problem. Can anyone
> help? :)
getattr(x, method)()
However, it isn't usually necessary to do this, because if x is an
object with method update, x.update is an object which can be passed or
stored.
David
>
> Jake
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