1try:
2    import math
3
4    math.factorial
5except (ImportError, AttributeError):
6    print("SKIP")
7    raise SystemExit
8
9
10for fun in (math.factorial,):
11    for x in range(-1, 30):
12        try:
13            print("%d" % fun(x))
14        except ValueError as e:
15            print("ValueError")
16