How to add a None value to a list in Python?

Question

I have a list:

A = ['Yes'] 

I want to have

 A = ['Yes',None] 

How can i do this?

Answer 1

Just use append :

 A.append(None) >>> print A ['Yes', None] 

Answer 2

Plain:

 A.append(None) 

or

 A += [None] 

or

 A.extend([None]) 

or

 A[len(A):] = [None]