Python 2.x (expressão única)
Agora, embora isso seja fácil de entender para os pitonistas, outros podem achar pelo menos interessante. Se você se pergunta por que há tantas lambdas, eu queria ter o máximo de sublinhado, mas repetição mínima. Quem não ama sublinhados? Ideone
(lambda ______________:(lambda ______,_______,________:(lambda _____:(lambda _,___,__,____,_____________:(lambda _________,__________:(lambda ___________,____________:___________(____________,____[_________**(_________+__________)-__________::_________+_________+_________]+_[__________::_________]+__[_________+__________])(____________,______________))((lambda _,__:________(______(_))[__]),(________(__import__(_[_________]+__[_________*_________+__________]+_[_________]))[_[_________:_________+_________]+___[__________/_________]+__[__________]+_____(u'')[__________/_________]+_[_________+__________]])))((_____________(_)+_____________(_))/_____________(_),_____________(_)/_____________(_)))(_____([]),_____({}),_____(None),_____({}.__iter__),lambda _:len(_)))(lambda _:_______(______(_))))((lambda _:_.__class__),(lambda _:_.__name__),(lambda _:_.__dict__)))('Just another Python Hacker\n')
Uma versão recuada, se você preferir:
(lambda ______________:
(lambda ______,_______,________:
(lambda _____:
(lambda _,___,__,____,_____________:
(lambda _________,__________:
(lambda ___________,____________:
___________(____________,____[_________**(_________+__________)-__________::_________+_________+_________]+_[__________::_________]+__[_________+__________])(____________,______________)) (
(lambda _,__:________(______(_))[__]),
(________(__import__(_[_________]+__[_________*_________+__________]+_[_________]))[_[_________:_________+_________]+___[__________/_________]+__[__________]+_____(u'')[__________/_________]+_[_________+__________]]))) (
(_____________(_)+_____________(_))/_____________(_),
_____________(_)/_____________(_))) (
_____([]),
_____({}),
_____(None),
_____({}.__iter__),
lambda _:len(_))) (
lambda _:_______(______(_)))) (
(lambda _:_.__class__),
(lambda _:_.__name__),
(lambda _:_.__dict__)))('Just another Python Hacker\n')
Isso define uma função e a chama com 'Just another Python Hacker'. Agora, não precisava ser uma função, mas achei que seria mais elegante.
f = (lambda ______________:(lambda ______,_______,________:(lambda _____:(lambda _,___,__,____,_____________:(lambda _________,__________:(lambda ___________,____________:___________(____________,____[_________**(_________+__________)-__________::_________+_________+_________]+_[__________::_________]+__[_________+__________])(____________,______________))((lambda _,__:________(______(_))[__]),(________(__import__(_[_________]+__[_________*_________+__________]+_[_________]))[_[_________:_________+_________]+___[__________/_________]+__[__________]+_____(u'')[__________/_________]+_[_________+__________]])))((_____________(_)+_____________(_))/_____________(_),_____________(_)/_____________(_)))(_____([]),_____({}),_____(None),_____({}.__iter__),lambda _:len(_)))(lambda _:_______(______(_))))((lambda _:_.__class__),(lambda _:_.__name__),(lambda _:_.__dict__)))
f('Hello.\n')
f('Just another Python Hacker here.\n')