Defining parent Class in Python 2.7.11

[sarah]

Hi everybody,
I am new to programming, I have networking back ground.
These days I am learning OOP.
I noticed following:
I can define parent class with out ()as shown in example#1, I can also define parent class with ()as shown in example#2. what is the conventional way to define Parent class is it with () or without ()?

Thanks and have a good weekend!!

# example#1
>>> class TEST:
...  pass
...
# example#2
>>> class TEST():
...  pass

[Gribouillis]

Hi Sarah,

Defining parent Class in Python 2.7.11

Don't use python 2.7. Its end of life is scheduled for January 1st, 2020.. Use python 3, otherwise you're going to learn obsolete things and you won't be able to run the code that everybody runs.

what is the conventional way to define Parent class is it with () or without ()?

• In current python 3, the conventional way is without ().
  
• In python 2.7, the conventional way is class Test(object): pass
  
• The two ways you showed above work in python 2.7 but they define prehistoric "old style classes" that go back to python 1. I'm very nostalgic of python 1 but I wouldn't recommend it to anyone nowadays.
  

[sarah]

Appreciated!!