''' 
	An example of exception handling in Python. Read through it
	carefully and figure out what it will do when run from the command
	line with 1.0 as its argument, and again with 0.0 as argument. 	
'''

import sys

def reciprocal(x):
    try:
        result = 1/x
    except ZeroDivisionError:
        print "..Whoopsy daisey!  Something wrong."
        print "..Returning  default"
        result = 10.0**99
    return result

print "\nAnd (drum roll, please) the answer is..."
answer = reciprocal(float(sys.argv[1]))
print  answer, "!\n"