print 'In %d days I have eaten %g %s.' % (2, 3.5, 'lobsters')

type("Go Red Sox!")

print("Go Red Sox!")
print "Wally the Green Monster"

dir("Three strikes and you're out!") 

type(__builtins__)

print dir(__builtins__)

def new_world(): 
    return 'Hello world!'
    
print new_world()

def squared(x):
    """ Return the square of a  
        value """
    return x ** 2

print squared(4)

def love_chocolate(N):
    """ A function to explain how much I love 
        chocolate """
    print 'I' + ' love '*N + ' chocolate'

love_chocolate(3)

print "Does squared have a docstring?", squared.__doc__ != None
print "Does love_chocolate have a docstring?", love_chocolate.__doc__ != None

def squaredShifted(x, shift = 10):
    return shift + (x ** 2)

squaredShifted(5, 20)

def fact(n): 
    if n ==0: 
        return 1
    else: 
        recurse = fact(n-1)
        result = recurse * n
        return result
    
fact(4)

f = lambda x: x**2

f(3)

x = 1

if x == 0: 
    print 'x is equal to 0'
else: 
    print 'x is not equal to 0'

if x == 0: 
    pass  # ignore zeros

if x > 0: 
    if x < 10: 
        print 'x is greater than 0 and less than 10'
    elif x >= 10:
        print 'x is greater than 0 and greater than or equal to 10'

if x > 0 and x < 10: 
    print 'x is bigger than 0 and less than 10'

for i in range(4):
    print 'Hello world!'

def countdown(n):
    while n > 0:
        print n
        n = n-1
    print 'Blastoff!'
    
countdown(3)