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Python 4 source code

backups

temporary data

semi-compiled Python code

'var' in Object.__dict__

'prop' in Class.__dict

len(Object.__diet__) == 1

'var1 in Class, dict

- -

++

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if a real-life object can be described with a set of adjectives, they may reflect a Python object method

the same class can be used many times to build a number of objects

each object of the same class can have a different set of methods

a subclass is usually more specialized than its superclass

class Class_4 (D, A) : pass

class Class_1(C,D): pass

class Class_3(A,C): pass

class Class_2(B,D): pass

the constructor must have at least one parameter

the constructor must return a value other than None

the constructor is a method named_init_

there can the more than one constructor in a Python class.

a is b

b( ) > 2

a() > 2

a is not None

rearrange the source code to make it clearer

check the source code in order to see if its correct

execute the source code

translate the source code into machine code

it outputs 2

the code is erroneous and it will not execute

it outputs 3

it outputs :

print 0

cause a runtime exception

prints 3

print an empty line