Math quiz

mathquizgame

import random

g = random.randrange(-10, 11, 1)
f = random.randrange(-10, 11, 1)

a = []

for i in range(0,10):
    try:
        x = int(input(" %d" %g + " + " + "%d = " %f))
    except:
        pass
    if g + f == x:
        print(" Correct")
        a.append(1)
    else:
        print(" Incorrect")
        a.append(0)
    g = random.randrange(-10, 11, 1)
    f = random.randrange(-10, 11, 1)

print("\n", "Total Score: ",(sum(a)/10)*100, "%")