Szabolcs Berecz wrote:
> On 14 Apr 2006 04:37:54 -0700, [EMAIL PROTECTED]
> <[EMAIL PROTECTED]> wrote:
>
>>def a():
>> def b():
>> print "b"
>> def c():
>> print "c"
>>
>>how can i call c() ??
>
>
> Function c() is not meant to be called from outside function a().
> That's what a nested function is for: localizing it's usage and
> prevent cluttering the global namespace
There's actually more than this about Python's nested functions: they
can be returned from the outer function and then carry the environnement
in which they where created:
def trace(func):
fname = func.__name__
def traced(*args, **kw):
print "calling func %s with *%s, **%s" % (fname, str(args), kw)
try:
result = func(*args, **kw)
except Exception, e:
print "%s raised %s" % (fname, e)
raise
else:
print "%s returned %s" % (fname, str(result))
return result
return traced
def test(arg1, arg2='parrot'):
print "in test, arg1 is %s" % arg1
return arg2 * 3
test = trace(test)
test(42)
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
--
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