#! /usr/bin/env python

# Load the sys module - we'll need it later to quit cleanly
import sys

# while just repeats as long as its condition is true... True is always True, so this just looks forever
while True:
# We initialise our age variable to None, because that's easy to test for and represents no value
    age=None
# while again - this time, repeat this code block until age is something other than None
    while age is None:
# Enter the age
        answer=raw_input("Please enter your age: ")
# The next line might fail, so wrap it in try: except:
        try:
# Do the cast - convert the string to an int.  This can fail.
            age=int(answer)
# If it failed...
        except:
# Let them know
            print "Invalid age entered"
# If the int() failed, age won't have been set, so it'll still be None, so the while loop repeats
# If the int() worked, age will be something other than None, so we fall off the end of the while block
        
# Ask a silly question...
    yn=raw_input("Would you like to display your age in seconds? ")
# Convert the answer to lowercase and see if it starts with 'y'
    if yn.lower().startswith("y"):
# If it does, do the maths, print the answer
        print age*365*24*60*60
# Or maybe it (in lowercase) starts with 'n'?
    elif yn.lower().startswith("n"):
# Let them know that they didn't want their age printing
        print "Okay, no age in seconds for you"
# Or maybe, just maybe, it (in lowercase, yes) starts with 'q' - for 'quit'
    elif yn.lower().startswith("q"):
# Let them know that they asked to quit...
        print "And we're out of here..."
# And go ahead and quit.
        sys.exit()
# Hmm... it doesn't start with 'y', 'n', or 'q' - it's invalid!
    else:
# So, let them know that as well...
        print "Invalid response"