TheSaint a écrit :
On 01:15, lunedì 16 giugno 2008 Calvin Spealman wrote:
such as getattr(obj,
methname)(a, b, c). Does this make sense?
This is big enlightenment :) Thank you! :)
I found problem with eval() when it comes to pass quoted strings.
I circumvent that by encapsulating the strings in variable or tuple.
The principle is to have a name which will refers a function somewhere in the
program and to call that function, plus additional data passed in.
In other word I'd expect something:
function_list= ['add' ,'paint', 'read']
for func in function_list:
func(*data)
Can't work - function_list is a list of strings, not a list of
functions. If the functions you intend to call are already bound to
names in the current scope, you don't even need any extra lookup
indirection:
def add(*args):
# code here
from some_module import paint
obj = SomeClass()
read = obj.read
functions = [add, paint, read]
args = [1, 2]
for func in functions:
func(*args)
I tried getattr,
getattr is useful when you only have the name of the
function/method/whatever attribute as a string. And a target object
(hint: modules are objects too) of course - if the name lives either in
the global or local namespace, you can access it by name using the dicts
returned by resp. the globals() and locals() functions.
HTH
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