Clear variable in python

Question

Is there a way to clear the value of a variable in python?

For example if I was implementing a binary tree:

Class Node:
    self.left = somenode1
            


        

Answer 1

The del keyword would do.

>>> a=1
>>> a
1
>>> del a
>>> a
Traceback (most recent call last):
  File "", line 1, in 
NameError: name 'a' is not defined

But in this case I vote for self.left = None