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Date: Mon, 18 Mar 2013 19:00:15 +0530
Subject: "eval vs operator.methodcaller" - which is better?
From: Laxmikant Chitare <laxmikant.general@gmail.com>
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Xref: csiph.com comp.lang.python:41412

Hi,

I have a program that picks module and method name from a
configuration file and executes the method. I have found two ways to
achieve this.

Apporach 1:
---------------------------
moduleName = 'mymodule'    #These two variables are read from conf file.
methodName = 'mymethod'

import operator
myModule = __import__('mymodule')
myMethod = operator.methodcaller('mymethod')
val = myMethod(myModule)
print val
---------------------------

Apporach 2:
---------------------------
moduleName = 'mymodule'    #These two variables are read from conf file.
methodName = 'mymethod'

val = eval('myModule.' + methodName + '()')
print val
---------------------------

Question: Which approach is better and why. Is there any other better
way to do this?

Regards,
Laxmikant