class method

- 
class myclass:
    class_teacher = "niraj sir"

    def __init__(self, name1, roleno1, aim1):
        self.name = name1
        self.role_no = roleno1
        self.aim = aim1

    # u have to use decorator for using classmethod
    @classmethod  # it works on class variables
    def setstream(cls, stream):
        myclass.stream1 = stream


myclass.setstream("science")

student1 = myclass("harish", 1, "software engineer")
student2 = myclass("shiva", 2, "hacker")

print(student2.stream1)

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