gistfile1.py

def slim_shady(shadylist):
    # slim_shady takes a list of Slim Shadies, returns Real Slim Shady, if exists 
    for shady in shadylist:
        print "Won't the real Slim Shady please stand up?"
        if shady == "Slim Shady":
            # it's safe to return here, because it's clear that any remaining
            # shadies in this sequence are just imitating
            return shady
    return None