from datetime import date, timedelta

now = date.today()

print(f"Today's date in standard form is {now}.")

# Time objects have a handy method to insert their components to strings.

print(now.strftime("Today is a %A. It is the month of %B in the year %Y."))

# Objects of type timedelta represent time differences that can be added

# and subtracted to times. We can easily solve the "Gigasecond challenge"

# from the Code Wars katas.

billion_seconds = timedelta(seconds = 10 ** 9)

gsfuture = now + billion_seconds

print(f"A billion seconds from now, the date will be {gsfuture}.")

gspast = now - billion_seconds

print(f"A billion seconds ago, the date was {gspast}.")

# A date object can be created in many different ways.

ludwig = date(1770, 12, 17)

td = now - ludwig

print(f"Ludwig van Beethoven was born {td.days} days ago.")

if now.month < ludwig.month or\

(now.month == ludwig.month and now.day <= ludwig.day):

td = date(now.year, ludwig.month, ludwig.day) - now

else:

td = date(now.year + 1, ludwig.month, ludwig.day) - now

if td.days == 0:

print("Rejoice with celebration of Ludwig van Beethoven!")

elif td.days == 1:

print("Sleep tight thinking of Ludwig van Beethoven tomorrow!")

else:

print(f"Only {td.days} days until Ludwig van Beethoven's birthday!")