import time
query_lst = [-60000,-6000,-600,-60,-6,0,6,60,600,6000,60000]
lst = []
dic = {}
for i in range(100000000):
 lst.append(i)
 dic[i] = 1 
start = time.time()
for v in query_lst:
 if v in lst:
  continue
end1 = time.time()
for v in query_lst:
 if v in dic:
  continue
end2 = time.time()
print "list search time : %f"%(end1-start)
print "dict search time : %f"%(end2-end1)

list search time : 11.836798 
dict search time : 0.000007