a python puzzle

[holger krekel]

Michal Wallace wrote:
> Here's a python puzzle. Solve it and you win a prize. :)
> 
> """
> Ha'f ahoy ad ayfa wdqr srxhekdpyr! H phmm zhby
> fhv odeajf dc cryy pys jdfahez ad ajy chrfa kyrfde
> ad fdmby ajhf irwkadzrxo. Ixe wdq chzqry ha dqa?
> 
> Fheiy wdq jxby axgye ow ijxmmyezy xet tyirwkayt
> ajy fyirya oyffxzy, H phmm ybye zhby wdq ajy
> irwkadzrxo-oxghez fdqriy idty ad xoxuy wdqr
> crhyetf!
> """
> hokdra fwf, farhez, rxetdo
> ihkjyr = mhfa(farhez.myaayrf[:26])
> rxetdo.fjqccmy(ihkjyr)
> ihkjyr = "".ldhe(ihkjyr)
> ihkjyr += ihkjyr.qkkyr()
> oxk = {}
> cdr kmxhe, irwka he uhk(farhez.myaayrf, ihkjyr):
>     oxk[kmxhe] = irwka
> cdr mhey he dkye(fwf.xrzb[1]):
>     krhea "".ldhe([oxk.zya(ij,ij) cdr ij he mhey])[:-1]


OK.  something like 

def decrypt(yourstring):
    dedict = {'F': 'S', 'I': 'C', 'H': 'I', 'a': 't', 'c': 'f', 'b': 'v', 'e': 'n',
    'd': 'o', 'f': 's', 'i': 'c', 'h': 'i', 'k': 'p', 'j': 'h', 'm': 'l',
    'l': 'j', 'o': 'm', 'q': 'u', 'p': 'w', 's': 'b', 'u': 'z', 't': 'd',
    'w': 'y', 'v': 'x', 'y': 'e', 'x': 'a', 'z': 'g', 'g': 'k'}
    return "".join([dedict.get(i,i) for i in yourstring])

returns 

    """
    It's time to test your brainpower! I will give
    six months of free web hosting to the first person
    to solve this cryptogram. Can you figure it out?

    Since you have taken my challenge and decrypted
    the secret message, I will even give you the
    cryptogram-making source code to amaze your
    friends!
    """
    import sys, string, random
    cipher = list(string.letters[:26])
    random.shuffle(cipher)
    cipher = "".join(cipher)
    cipher += cipher.upper()
    map = {}
    for plain, crypt in zip(string.letters, cipher):
        map[plain] = crypt
    for line in open(sys.argv[1]):
        print "".join([map.get(ch,ch) for ch in line])[:-1]


but i don't know if i need free webhosting :-)

regards,

    holger