Thanks! I guess this is as simple as it gets then. I was just looking for the "one obvious way to do it".
W dniu środa, 28 sierpnia 2013 15:11:34 UTC+2 użytkownik Tim Chase napisał: > On 2013-08-28 05:52, AdamKal wrote: > > > From time to time I have to apply a series of functions to a value > > > in such a way: > > > > > > func4(func3(func2(func1(myval)))) > > > > > > I was wondering if there is a function in standard library that > > > would take a list of functions and a initial value and do the above > > > like this: > > > > > > func_im_looking_for([func1, func2, func3, func4], myval) > > > > At least in Py2.x you can use reduce: > > > > reduce(lambda value, fn: fn(value), [list_of_functions], myval) > > > > I believe it was moved into functools.reduce() in Py3.x meaning you > > might want to do something like > > > > try: > > reduce # see if it's already in __builtins__ > > except NameError: # running Py3... > > from functools import reduce > > > > or > > > > try: > > from functools import reduce > > except ImportError: > > pass # it should already be in __builtins__ for pre-2.6 > > > > at the top to make sure it's in your global namespace. > > > > -tkc -- http://mail.python.org/mailman/listinfo/python-list
