Python:Classes - Revision history

Hdridder at 13:54, 9 December 2018

2018-12-09T13:54:41Z

← Older revision		Revision as of 13:54, 9 December 2018
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	;__init__(self, <parameters that can be provided with default value>)		;__init__(self, <parameters that can be provided with default value>)
	:Constructor, automatically called when the object is instantiated. Use this to initialize the object attributes. An object is instantiated by just assigning a class to a variable. <code>a = class(~~initial attributes~~)</code>		:Constructor, automatically called when the object is instantiated. Use this to initialize the object attributes. An object is instantiated by just assigning a class to a variable. <code>a = class()</code>

	;__del__(self)		;__del__(self)
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	return [self.gettitle(),self.getprice()]		return [self.gettitle(),self.getprice()]
	</syntaxhighlight>		</syntaxhighlight>

			;class(super)
			:Create a sub-class for the super-class.
			;super().<method>
			:Call the method from the super-class.

Hdridder at 15:49, 20 May 2018

2018-05-20T15:49:37Z

← Older revision		Revision as of 15:49, 20 May 2018
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	;__init__(self, <parameters that can be provided with default value>)		;__init__(self, <parameters that can be provided with default value>)
	:Constructor, automatically called when the object is instantiated. Use this to initialize the object attributes.		:Constructor, automatically called when the object is instantiated. Use this to initialize the object attributes. An object is instantiated by just assigning a class to a variable. <code>a = class(initial attributes)</code>

	;__del__(self)		;__del__(self)

Hdridder at 09:18, 4 May 2018

2018-05-04T09:18:29Z

← Older revision		Revision as of 09:18, 4 May 2018
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			[[Category:Python]]
	Create your own classes		Create your own classes

Hdridder at 19:23, 30 April 2018

2018-04-30T19:23:30Z

← Older revision		Revision as of 19:23, 30 April 2018
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	;__init__(self, <parameters that can be provided with default value>)		;__init__(self, <parameters that can be provided with default value>)
	:Constructor, automatically called when the object is instantiated.		:Constructor, automatically called when the object is instantiated. Use this to initialize the object attributes.

	;__del__(self)		;__del__(self)
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	:Returns the string representation of the object. E.g. if you use print(object) or str(object)		:Returns the string representation of the object. E.g. if you use print(object) or str(object)

	All interaction with the object should go via a method, not to variables in the class.		All interaction with the object should go via a method, not to variables in the class (use interface, not implementation). Python has no mechanism to enforce this. Variable name can be obfuscated by putting underscore before their name. You can do this with methods too that should not be called directly but only from other methods.

	Example:		Example:
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
	class Medium:		class Medium:
	def __init__(self, ~~titel~~='', ~~prijs~~=0):		def __init__(self, title='', price=0):
	self.~~titel~~ = ~~titel~~		self.__title = title
	self.~~prijs~~ = ~~prijs~~		self.__price = price

	def __str__(self):		def __str__(self):
	return "~~Titel~~: {0}\~~nPrijs~~: {1:6.2f}".format(self.~~titel~~,self.~~prijs~~)		return "Title: {0}\nPrice: {1:6.2f}".format(self.__title,self.__price)

	def ~~gettitel~~(self):		def gettitle(self):
	return self.~~titel~~		return self.__title

	def ~~settitel~~(self, ~~titel~~):		def settitle(self, title):
	self.~~titel~~ = ~~titel~~		self.__title = title

	def ~~getprijs~~(self):		def getprice(self):
	return self.~~prijs~~		return self.__price

	def setprijs(self,~~prijs~~):		def setprijs(self,price):
	self.~~prijs~~ = ~~prijs~~		self.__price = price

	def getall(self):		def getall(self):
	return [self.~~gettitel~~(),self.~~getprijs~~()]		return [self.gettitle(),self.getprice()]
	</syntaxhighlight>		</syntaxhighlight>

Hdridder at 14:20, 20 March 2018

2018-03-20T14:20:53Z

← Older revision		Revision as of 14:20, 20 March 2018
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	;__del__(self)		;__del__(self)
	:Destructor, automatically called when the object is removed.		:Destructor, automatically called when the object is removed.


	;__str__(self)		;__str__(self)

Hdridder at 14:19, 20 March 2018

2018-03-20T14:19:03Z

← Older revision		Revision as of 14:19, 20 March 2018
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	Create your own classes		Create your own classes

			;self
			:The namespace of the current instance. Can have any name, 'self' is commonly used.

	;__init__(self, <parameters that can be provided with default value>)		;__init__(self, <parameters that can be provided with default value>)
	:Constructor, automatically called when the object is instantiated.		:Constructor, automatically called when the object is instantiated.

	;self		;__del__(self)
	:~~The namespace of~~ the ~~current instance. Can have any name, 'self'~~ is ~~commonly used~~.		:Destructor, automatically called when the object is removed.


	;__str__(self)		;__str__(self)

Hdridder at 11:54, 15 March 2018

2018-03-15T11:54:17Z

← Older revision		Revision as of 11:54, 15 March 2018
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	Create your own classes		Create your own classes

	~~Classes should have~~		;__init__(self, <parameters that can be provided with default value>)
			:Constructor, automatically called when the object is instantiated.

			;self
			:The namespace of the current instance. Can have any name, 'self' is commonly used.

	;~~__init__~~(self)		;__str__(self)
	:~~Constructor~~, ~~automatically called when~~ the ~~object is instantiated~~.		:Returns the string representation of the object. E.g. if you use print(object) or str(object)

			All interaction with the object should go via a method, not to variables in the class.

	Example:		Example:

Hdridder at 11:25, 15 March 2018

2018-03-15T11:25:13Z

← Older revision		Revision as of 11:25, 15 March 2018
Line 6:		Line 6:
	;__init__(self)		;__init__(self)
	:Constructor, automatically called when the object is instantiated.		:Constructor, automatically called when the object is instantiated.

			Example:
			<syntaxhighlight lang=python>
			class Medium:
			def __init__(self, titel='', prijs=0):
			self.titel = titel
			self.prijs = prijs

			def __str__(self):
			return "Titel: {0}\nPrijs: {1:6.2f}".format(self.titel,self.prijs)

			def gettitel(self):
			return self.titel

			def settitel(self, titel):
			self.titel = titel

			def getprijs(self):
			return self.prijs

			def setprijs(self,prijs):
			self.prijs = prijs

			def getall(self):
			return [self.gettitel(),self.getprijs()]
			</syntaxhighlight>

Hdridder at 11:18, 15 March 2018

2018-03-15T11:18:58Z

← Older revision		Revision as of 11:18, 15 March 2018
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	Classes should have		Classes should have


			;__init__(self)
			:Constructor, automatically called when the object is instantiated.

Hdridder: Created page with "Create your own classes Classes should have"

2018-03-15T11:15:19Z

Created page with "Create your own classes Classes should have"

New page

Create your own classes

Classes should have