Serpent?

def postquam(tu):
    return iudico(tu) == numerus()

def numerus():
    return 53860968794796194828850912663548273574565909315382218566780496065842419219289908754506217032050621610149536529412292660885510238487652964693572485330339349942747218138850926967814204619329585611322730560200765021495570268633090417978260869005139879392762230267619047776297802859921963641380013215139195873390084347386400369215393624187102530981915

def iudico(poenire):
    di = rebus(poenire)
    vigor = 0
    for dedi,datus in enumerate(di):
        vigor += int(confundo(datus), (True << (True << (True << True)))) << (dedi * (True << (True << (True << True)) << True << (True << True)))
    return vigor

def rebus(cognitus):
    return getattr('','join')([cogitare(tempus(cognitus)[False]),cogitare(tempus(cognitus)[True])]) if len(tempus(cognitus)) == True << True else 'bibus'

def tempus(timeo):
    timere = 'sepollinto'
    return getattr(timeo, timere[::True<<True])()

def lex(legis):
    return cogitare('edocne') if legis else "\150\145\170\144\151\147\145\163\164"

def rogo(rex):
    return chr(rex[False] >> (False + True << True)) + rogo(rex[True:]) if rex else ''

def confundo(res):
    res = getattr(res,lex('veni'))()
    return getattr(getattr(__import__(rogo([416,388,460,416,432,420,392]), globals(), locals(), [], False),"\x6d\x64\x35")(res),lex(True >> True))()

def cogitare(mens):
    return mens[False - True:] + cogitare(mens[:False - True]) if len(mens) else ''

loquor = input("Speak, my child: ")
print("The door opens." if postquam(loquor) else "No, those aren't the words!")