myObject = MyClass("BlahBlah")
print myObject.getString()
# outputs "BlahBlah"
myString = "More Text"
myObject.addText(myString)
print myObject.getString()
# outputs "BlahBlahMore Text"

# here's a simple class
class MyClass:
    # class constructor/initialisation
    # if no string is passed, defaults to an empty string
    def __init__(self, aString=""):
        self.myString = aString
 
    # addText function
    def addText(self, appendedText):
        self.myString += appendedText
 
    # getString function - returns the current string
    def getString(self):
        return self.myString
 
# Now lets test the class...
print "Testing the class [passing a literal string to the  constructor]"
# Create an instance of the class, passing some text
myObject = MyClass("Blah blah blah...")
print myObject.getString() # Lets see what we've got
 
# now lets add some text by passing a literal string to addText...
myObject.addText("More text...")
print myObject.getString() # Now what do we have?
 
# now lets create a string object and pass it to addText...
anotherString = "Yet more text!"
myObject.addText(anotherString)
print myObject.getString() #  Now what've we got?
 
print "\nTesting the class [passing no parameters!]"
myOtherObject = MyClass()
print myOtherObject.getString() # This should print a blank line
 
# now lets pass addText the string object we created earlier!
myOtherObject.addText(anotherString)
print myOtherObject.getString() # now what have we got?

myObject = MyClass("Whatever")
myObject.addText() 
myObject.getString()