Python3变量作为字典键的方法

import random

times=1
basegold=10
base_gold=1200
#gamers and score by dictionary,1200 will change in next loop
games={'a':1200,'b':1200,'c':1200}
for j in games.keys():
    games[i]=base_gold
#Random choice one as land ower
dz=random.sample(games.keys(),1)
#random win or lose ,1 stand ower win
wl=random.randint(0,1)
if wl==0:
    dz_gold=games[str(dz[0])]=times*basegold*2*-1+base_gold
    del games[str(dz[0])]
    nong_gold=base_gold+times*basegold*2*1
    for i in games.keys():
        games[i]=nong_gold
else:
    dz_gold=games[str(dz[0])]=times*basegold*2*1+base_gold
    del games[str(dz[0])]
    nong_gold=base_gold+times*basegold*2*-1
    for i in games.keys():
        games[i]=nong_gold
games[str(dz[0])]=dz_gold