self variable in python

self:

• It is not a keyword.
• It is a variable
• It is used to define constructor and dynamic methods.
• It is an argument of function.
• Argument : Is a local variable – access within that block
• ‘self’ holds object address.
• We can display object address using ‘self’.
• By default address will display as “ClassName Object @ Address_in_HexaDecimal

class Test:
    def __init__(self):
        print("Address :",self)
        return
    
    def main():
        Test()
        return

Test.main()

id(): A pre-defined method that returns integer value of specified Object.

type(): Returns the class name of specified object.

class Test:
    def __init__(self):
        print("Address :",id(self))
        print("Name :",type(self))
        return
    
    def main():
        Test()
        return

Test.main()

We cannot access ‘self’ in main() method to work with object.

class Test:
    def __init__(self):
        print("In Constructor :",id(self))
        return
    
    def main():
        Test()
        print("In main :", id(self))
        return

Test.main()