29-staticmethod-1.py

#!/usr/bin/env python3

# 29-staticmethod-1.py

"""
# Refer https://arvimal.wordpress.com/2016/06/12/instance-class-static-methods-object-oriented-programming/
# a) Static methods are functions methods which doesn’t need a binding 
# to a class or an instance.
# b) Static methods, as well as Class methods, don’t require an instance 
# to be called.
# c) Static methods doesn’t need  self or cls as the first argument 
# since it’s not bound to an instance or class.
# d) Static methods are normal functions, but within a class.
# e) Static methods are defined with the keyword @staticmethod 
# above the function/method.
# f) Static methods are usually used to work on Class Attributes.
"""


class MyClass(object):
    count = 0

    def __init__(self, val):
        self.val = self.filterint(val)
        MyClass.count += 1

    @staticmethod
    def filterint(value):
        if not isinstance(value, int):
            print("Entered value is not an INT, value set to 0")
            return 0
        else:
            return value


a = MyClass(5)
b = MyClass(10)
c = MyClass(15)

print(a.val)
print(b.val)
print(c.val)
print(a.filterint(100))