__init__ method is the most important method in a class. This is called when an instance (object) of the class is created, using the class name as a function.
All methods must have
self as their first parameter, although it isn’t explicitly passed, Python adds the
self argument to the list for you; you do not need to include it when you call the methods. Within a method definition,
self refers to the instance calling the method.
Instances of a class have attributes, which are pieces of data associated with them. In our example,
Motor instances have attributes
engine. These can be accessed by putting a dot, and the attribute name after an instance.
self.attribute can therefore be used to set the initial value of an instance’s attributes.
class Motor: def __init__(self, color, engine): self.color = color self.engine = engine honda = Motor("red", 125) yamaha = Motor("blue", 150) suzuki = Motor("orange", 250) print(suzuki.engine)
The terminal output will be:
ddn_ro@linux:~/Desktop$ python file.py 250 ddn_ro@linux:~/Desktop$
__init__ method takes two arguments and assigns them to the object’s attributes. The
__init__ method is called the class constructor.