gistfile1.py

def compute_something(values):
    for v in values:
        if v < 100:
            raise Exception("Thats not a big enough number!")
        else:
            print("good dats the right amount")

try:
    compute_something([100, 200, 300, 400, 500, 1501025, 1250015, 125005])
except:
    print("one of the values was too low!")