| 1 | |
| 2 | class My_Class: |
| 3 | |
| 4 | # class variables: |
| 5 | count = 0 |
| 6 | unique_value = 0 |
| 7 | |
| 8 | def __init__(self): |
| 9 | print("__init__ called, initialize instance variables of object") |
| 10 | self.my_instance_variable = [] # create instance variable |
| 11 | My_Class.count += 1 # also change class variable |
| 12 | |
| 13 | def my_instance_method(self): |
| 14 | print("my_instance_method called, access to instance variables via 'self'") |
| 15 | self.my_instance_variable.append(My_Class.unique_value) |
| 16 | My_Class.unique_value += 1 # also change class variable |
| 17 | |
| 18 | @classmethod |
| 19 | def my_class_method(cls): |
| 20 | print("my_class_method called, access to class variables via 'cls', no instance variables") |
| 21 | print(f"{cls.count=}") |
| 22 | |
| 23 | @staticmethod |
| 24 | def my_static_method(): |
| 25 | print("my_static_method called, no 'self' or 'cls'") |
| 26 | print(f"{My_Class.count=}") # but still access to class variables |
| 27 | |
| 28 | obj1 = My_Class() |
| 29 | obj2 = My_Class() |