On 5/3/2009 3:39 PM bearophileh...@lycos.com said...
Sometimes I rename recursive functions, or I duplicate&modify them,
and they stop working because inside them there's one or more copy of
their old name.
This happens to me more than one time every year.
So I have written this:
from inspect import getframeinfo, currentframe
def SOMEVERYUGLYNAME(n):
if n <= 1:
return 1
else:
self_name = getframeinfo(currentframe()).function
#self_name = getframeinfo(currentframe())[2] # older python
# only if it's a global function
#return n * globals()[self_name](n - 1)
return n * eval(self_name + "(%d)" % (n - 1))
assert SOMEVERYUGLYNAME(6) == 2*3*4*5*6
Are there nicer ways to do that?
I've sometimes used classes like:
class SOMEVERYUGLYNAME:
def __call__(self,n):
if n<=1:
return 1
else:
return n*self.__class__()(n-1)
assert SOMEVERYUGLYNAME()(6) == 2*3*4*5*6
It's probably nicer (for some definition of nice), but I wouldn't say
it's nice.
Emile
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