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Python is a language that supports the object-oriented programming paradigm. Like other OOP languages, Python has classes that are defined by object skeletons. Python supports class inheritance. A class can have multiple subclasses, but only inherits directly from one superclass. Syntax class ClassName(object): This is a class class_variable def __init__(self,*args): self.args = args def __repr__(self): return Something that will represent the object as a string def other_method (self,*args): # do something else Sample class Horse(object): A horse represents a horse species = Equus ferus caballus def __init__(self,color,weight,wild=False) : self . color = color self.weight = weight self.wild = wild def __repr__(self): return %s horse weighs %f and wild is %b % (self.color,self.weight,self.wild ) def make_sound( self ): print neighhhh def move(self): return walk Class Syntax ClassName(SuperClass): # same as above # use super to get in advance Example class Racehorse(horse): Faster horse inherits from horse def move(self): return run def movement_slow(self): return super(horse,self).movement() def __repr__(self): return %s racehorse with weight % f wild state is %b (custom color, custom weight t,custom.wild) >> horse3 = Race Horse (white,200) >> print horse3.movement_slow() walk >> print horse3.movement() run Enriching your code with human-readable descriptions can help you make document design decisions. Example # This is a single line comment. Some comments must contain multiple lines. Use this if you have more than 4 one-line comments in a row. Example This is a multi-line comment, good for commenting out entire sections of code very quickly. Dictionaries are Pythons built-in associative data type. The dictionary consists of key-value pairs where each key corresponds to a value. Dictionaries, like sets, are unordered. A few notes about keys and values: * The key must be immutable and hashable, while the value can be of any type. Common examples of keys are tuples, strings, and numbers. * One dictionary can contain keys of different types and values of different types. Syntax dict() #creates a new empty dictionary #creates a new empty dictionaryexample >> mydict = >> value_content1 = abcd >> value_content2 = wxyz >> mydict.update(keyname1:value_content1) >> my_dict.update(key_name2:content_of_value2) >> my_dict key_name1:abcd, key_name2:wxyz >> my_dict.get(key_name2) wxyz Syntax key1 :value1,key2:value2Example >> my_dict = key1:1,2,3,key2:I am a string,123:456 >> my_dictkey1 # 1 , 2,3 >> my_dict123 #456 >> my_dictnew key = New Value >> print my_dict key2:I am a string, new key:New Value , Key1:1,2,3,123:456 Python functions can be used to abstract parts of code that can be used elsewhere. Syntax def function_name(parameters): # Some code here Example def add_two(a, b): c = a + b return c # or no direct assignment to c def add_two(a, b)Python is a language that supports the object-oriented programming paradigm. Like other OOP languages, Python has classes that are skeletons of objects. Python supports class inheritance. A class can have multiple subclasses, but it can inherit directly from only one superclass. Syntax class ClassName(object): This is a class class_variable def __init__(self,*args): self.args = args def __repr__(self): return Something that will represent the object as a string def other_method (self,*args): # do something else Sample class Horse(object): A horse represents a horse specs = Equus ferus caballus def __init__(self,color,weight,wild=False) : self . color = color self.weight = weight self.wild = wild def __repr__(self): return %s horse weight %f and wild %b % (self.color,self.weight,self.wild ) def make_sound ( self): print neighhhh def traffic(self): return walk Class Syntax ClassName(SuperClass): # same as above # use keyword super to jump above Example class Racehorse(horse): Faster horse inherited from horse def traffic(self): return run def traffic_slow(self): return super(Horse,self).movement() def __repr__(self): return %s racehorse weighing %f and wild state %b (custom color, custom weight, own sny.wild) >> ho rse3 = RaceHorse(white,200) >> print horse3.movement_slow() walk >> print horse3.movement() run Enriching the code with readable descriptions can help in making decisions for document design. Example # is a one-line comment. Some comments should span several lines. Use this if you have more than 4 one-line comments in a row. The example is a multi-line comment, Im handy for commenting out entire code snippets very quickly Dictionaries are pythons built-in associative data type. The dictionary consists of key-value pairs where each key corresponds to a value. Like sets, dictionaries are unordered. A few notes about keys and values: * The key must be immutable and hashable, and the value can be of any type. Common examples of keys are tuples, strings, and numbers. * One dictionary can contain keys of different types and values of different types. Syntax dict() #creates a new empty dictionary #creates a new empty dictionaryExample >> my_dict = >> content_of_value1 = abcd >> content_of_value2 = wxyz >> my_dict.update(key_name1:content_of_value1 ) >> my_dict.update(key_name2:content_of_value2) >> my_dict key_name1:abcd, key_name2:wxyz >> my_dict.get(key_name2) wxyz Syntax key1 :value1,key2:value2Example >> my_dict = key1:1,2,3,key2:I am a string,123:456 >> my_dictkey1 # 1 , 2,3 >> my_dict123 #456 >> my_dictnew key = New value >> print my_dict key2:I am a string, new key : New value , key1:1,2,3,123:456 Python functions can be used to abstract parts of code for use elsewhere. Syntax def function_name(parameters): # Here is some code Example def add_two(a, b): c = a + b return c # or no indirect assignment c def add_two(a, b)

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