python之-if语句

#!/usr/bin/python
# Filename: if.py 
number = 23
guess = int(raw_input('Enter an integer : '))
if guess == number:
    print 'Congratulations, you guessed it.' 
# New block starts here
    print "(but you do not win any prizes!)" 
# New block ends here
elif guess < number:
    print 'No, it is a little higher than that' 
# Another block
    # You can do whatever you want in a block ...
else:
    print 'No, it is a little lower than that' 
    # you must have guess > number to reach here
print 'Done'
# This last statement is always executed, after the if statement is executed

if True:
    print 'Yes, it is true'