[EMAIL PROTECTED] a écrit :
I'm parsing a simple file and given a line's keyword, would like to call
the equivalently named function.
There are 3 ways I can think to do this (other than a long if/elif
construct):
1. eval()
2. Convert my functions to methods and use getattr( myClass, "method" )
3. Place all my functions in dictionary and lookup the function to be
called
4. Place all your functions in a module and use getattr(the_module, "func")
5. use globals().get("func")
> Any suggestions on the "best" way to do this?
#1 is the worst possible solution, and #2 doesn't make sens if you don't
need methods.
#4 is simple but can be problematic since these functions are not
necessarily related enough to make for a module with hi cohesion and low
coupling.
#5 is the simplest solution, but can be dangerous, since just any
function in the global namespace (which includes the builtins...) can be
called.
#3 is a bit heaviest to setup and maintain, but much more secure since
you explicitely choose the availables functions.
Depending on the context (ie: where this 'simple file' comes from), I'd
choose #3 or #5.
My 2 cents...
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