python_fn_20 - 8BitsCoding/RobotMentor GitHub Wiki

ruby

require 'date'
d1 = Date.new(2000, 1, 1)
d2 = Date.new(2010, 1, 1)
p d1.year()
p d2.year()
p Date.today()

class Cs
  def Cs.class_method()
    p "Class method"
  end
  def instance_method()
    p "Instance method"
  end
end
i = Cs.new()
Cs.class_method()
i.instance_method()
#Cs.instance_method() 오류발생
#i.class_method() 오류발생

---

python

class Cs:
    @staticmethod
    def static_method():
        print("Static method")
    @classmethod
    def class_method(cls):
        print("Class method")
    def instance_method(self):
        print("Instance method")
i = Cs()
Cs.static_method()
Cs.class_method()
i.instance_method()

class Cs:
    count = 0
    def __init__(self):
        Cs.count = Cs.count + 1
    @classmethod
    def getCount(cls):
        return Cs.count
i1 = Cs()
i2 = Cs()
i3 = Cs()
i4 = Cs()
print(Cs.getCount())