micropython/tests/float/math_factorial_intbig.py

try:
    import math
    math.factorial
except (ImportError, AttributeError):
    print('SKIP')
    raise SystemExit


for fun in (math.factorial,):
    for x in range(-1, 30):
        try:
            print('%d' % fun(x))
        except ValueError as e:
            print('ValueError')