I have been reading http://www.python.org/dev/peps/pep-3100/
en there is written:
To be removed:
...
callable(): just call the object and catch the exception
...
But that doesn't seem to be a generally available option.
The place where you want to check if something is callable
doens't need to be the place where you actually want to call
it. Removing callable will mean that you can't check whether
or not something is callable without incurring the side-effects
of calling it.
I also think code will become more ugly
How do you suggest I would code the following:
if callable(func):
for i, el in lst:
lst[i] = func(el)
othercode()
I can code as follows:
try:
for i, el in lst:
lst[i] = func(el)
othercode()
except TypeError:
pass
But this has the problem that othercode could throw a TypeError:
So it seems I would need at least two try statements
try:
for i, el in lst:
try:
lst[i] = func(el)
except TypeError
raise LoopBreak
othercode()
except LoopBreak:
pass
And this still has problems because the TypeError could be
raised because lst is an unsubscriptable object.
Is there a chance this will be reconsidered?
--
Antoon Pardon
--
http://mail.python.org/mailman/listinfo/python-list
