On 2/10/2010 9:36 AM, Steven D'Aprano wrote:
On Wed, 10 Feb 2010 05:59:41 -0800, Muhammad Alkarouri wrote:
Hi everyone,
What is the simplest way to access the attributes of a function from
inside it, other than using its explicit name? In a function like f
below:
def f(*args):
f.args = args
print args
is there any other way?
Not built-in.
I am guessing the next question will be: should I really care? It just
feels like there should be a way, but I am not able to verbalise a valid
one at the moment, sorry.
I completely agree with you. It is a wart that functions are only able to
refer to themselves by name, because if the name changes, things break.
Consider:
old_f = f # save the old version of the function
def f(x):
return old_f(x+1) # make a new function and call it f
This won't work correctly, because old_f still tries to refer to itself
under the name "f", and things break very quickly.
They didn't break immediately for me -- what am I missing?:
#-------------------
def f(): return "old func"
g = f
print "name attr of f:", f.__name__
print "name attr of g:", g.__name__
def f(): return "new func"
print "name attr of f:", f.__name__
print "name attr of g:", g.__name__
print "*** calling function currently named f:"
print f()
print "*** calling function currently named g:"
print g()
#-------------------
program output (Python 2.6.4):
name attr of f: f
name attr of g: f
name attr of f: f
name attr of g: f
*** calling function currently named f:
new func
*** calling function currently named g:
old func
-John
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