Francesco Bochicchio wrote:
def dec_f(f):
def inner_f():
if f.enabled:
f()
return inner_f
@dec_f
def funct():
print "Ciao"
The three lines above should behave a lot like:
def funct_original():
print "Ciao"
funct = dec_f(funct_original)
> funct.enabled = True
> funct()
This is decorating "funct", but inner_f is testing the argument it was
passed (funct_original), not inner_f (which is now called funct). No
wonder it finds no "enabled" attribute.
> So I have a workaround, but still don't understant why the original
> code does not work.
> Anyone can point me to an explanation?
So, you can fix this like so:
def dec_f(f):
def inner_f():
if inner_f.enabled:
f()
return inner_f
Or even:
def dec_f(f):
def inner_f():
if inner_f.enabled:
f()
inner_f.enabled = False
return inner_f
Thus testing the thing that you were marking with funct.enabled = True.
Does this help explain?
--Scott David Daniels
scott.dani...@acm.org
--
http://mail.python.org/mailman/listinfo/python-list
