How to correct, save, run with ptpython

[sylas]

Hi all. I am Administrator. With Notepad: I go to correct the error, then I click on "save" icon, then I go to Command Prompt and run with "python Filename".

But with ptpython , where to correct, where to save, where to run.
Beside that , At the bottom, right corner I have "Meta+Enter Execute". What is it ?
Also at the bottom I have "History". I should like to use that, but I don't know how.

Error:
C:\Users\Sylvain                        
λ ptpython                              
>>> class Selfless:                     
...     def __init__(Self, data):       
...         self.data=data              
...     def selfless(arg1,arg2):        
...         return arg1+arg2            
...     def normal(self,arg1,arg2):     
...         return self.data+arg1+arg2  
                                        
>>> X=Selfless(2)                       
Traceback (most recent call last):      
  File "<stdin>", line 1, in <module>   
  File "<stdin>", line 3, in __init__   
NameError: name 'self' is not defined   
name 'self' is not defined              
                                        
>>>