Mit navn det står med python

Gækkebrev.py

str = lambda x: x.__str__()
l=[42]

class o(list):
    def __add__(s,a): list.append(s, str(a))
    def __xor__(s,a): map(str,[a[0]]*a[1]); s+a[0]
    def __str__(s): return ''.join(s)

def d(_):
    def d_(f):
        def q(*a,**b):
            _[:]=_*2
            def __():
                _[:]=_[:len(_)/2]
                return __
            return __
        return q
    return d_
@d(l)
def f(a=0, b=1):
    return lambda : a+b

def e(_):
    def e_(g):
        def r(*a,**b):
            _[:]=_+[_[-1]]
            def __():
                _[:]=_[:-1];return __
            return g(len(_), __, **b)
        return r
    return e_
@e(l)
def g(a=1, b=0):
    g.__str__ = lambda : chr(g()[0])
    return a,b

if (f(),f(),f() == g(),g(),g()):
    f() and g() or g() and f()
f();f();f()()

l = g()*5
any(l) and map(str, [g(i) for i in l]+[g,g]);

o = o()
o+g

bool(o^(g,i) for i in [2]) and (o^(g,i) for i in [3])
any (o^(g,i) for i in [4]) or  (o^(g,i) for i in [5])
bool(o^(g,i) for i in [6]) or  (o^(g,i) for i in [7])

g()[1]()()()()()()()()();o+g;g()[1]()()()()()()()()();o+g

bool(o^(g,i) for i in [10,11])
all (o^(g,i) for i in [12,13])
bool(o^(g,i) for i in [14,15])

o[3]=chr(ord(o[3])-0x20)

import sys; sys.stdout.write(str(o))