Python: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>)

Constructor, automatically called when the object is instantiated.

__del__(self)

Destructor, automatically called when the object is removed.

__str__(self)

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:

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()]