Why am I getting this error?

[the_jl_zone]

I'm trying to learn how to use Python classes using this one as an example:

class ExampleClass:
...     def __init__(self,example_parameter):
...         self.example_data=33
...         self.example_param=example_parameter
...         print("message from the constructor")
...     def example_method(self):    
...         print(self.example_param)
...     def get_example_data(self):    
...         return self.example_data
...     def set_example_data(self):   
...         self.example_data=value

I keep getting this error message for this functions:

example_class_object.set_example_data(543)
Traceback (most recent call last):
  File "<blender_console>", line 1, in <module>
TypeError: ExampleClass.set_example_data() takes 1 positional argument but 2 were given