python_classObject_intro.py

__author__ = 'lyndsay.beaver'

# class ClassName:
#     <statement -1>
#
# Class objects support two kinds of operations:
# attribute references ( <class>.<attribute> )
# instantiation ( <class()> )
#
# Many classes like to create object with instances customized to a specific intitial state. ( def __init__(self): )
#
# Methods may call other methods by using method attributes of the self argument
#
# Classes support inheritance ( class DerivedClassName(BaseClassName): )
#
# There is a convention that is followed by most Puthon sode: a name prefixed with an underscore (eg. _spam) should be treated as a non-public part of the API
#

class BaseClass:
    def c(self):
        return 3

class TestClass(BaseClass):
    def __init__(self):
        self.b = 2
        self._d = 4
    def add(self):
        pass
    def plusOne(self):
        c = self.c
        return self.add()+1



c = TestClass()

c.a = 1

print c.a
print c.b
print c.c()
print c._d  # once you make a non-public item like this, you won't use it publicly