ex41.py

stuff =['Test','This','Out']
print ' '.join(stuff)

class TheThing(object):

    def __init__(self):
        self.number=0

    def some_function(self):
        print ("I got called.")

    def add_me_up(self,more):
        self.number +=more
        return self.number

# two different things

a=TheThing()
b=TheThing()

a.some_function()
b.some_function()

print a.add_me_up(20)
print b.add_me_up(30)

print a.number
print b.number

# Study this. This is how you pass a variable
# from one class to another. You will need this.

class TheMutiplier(object):

    def __init__(self,base):
        self.base=base

    def do_it(self,m):
        return m*self.base

x=TheMutiplier(a.number)
print x.do_it(b.number)

c=20
d=25
c,d=d,c

print c,d