random function from locals() with defined prefix

I'm working on a textbased adventure and now want to run a random function. All adventure function are "adv" followed by a 3 digit number.

If I run go() I get back :

IndexError: Cannot choose from an empty sequence

This is because allAdv is still empty. If i run go() line by line in the shell it works but not in the function. What did I miss?

import fight
import char
import zoo
import random

#runs a random adventure
def go():
    allAdv=[]
    for e in list(locals().keys()):
        if e[:3]=="adv":
            allAdv.append(e)
    print(allAdv)
    locals()[random.choice(allAdv)]()


#rat attacks out of the sewer
def adv001():
    print("All of a sudden an angry rat jumps out of the sewer right beneath your feet. The small, stinky animal aggressivly flashes his teeth.")
    fight.report(zoo.rat)