# largest_and_smallest.py

# largest_and_smallest.py

largest = 0
smallest = 0
while True:
    num = raw_input("Enter a number: ")
    if num == "done" : break

    while True:
        try: # isolate expected catching, helps find other areas to debug
            num = int(num) # instead of... num = num(type)
        except:
            print "Invalid entry"
            break
        if num >= largest : largest = num
        if num <= smallest : smallest = num

        print "Maximum is", largest
        print "Minimum is", smallest
        break