python3 exception var deleting

py3_except.py

$ python3
Python 3.7.7 (default, Mar 10 2020, 17:25:08) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> e = 'hi'
>>> try:
...   1/0
... except Exception as e:
...   pass
... 
>>> e
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'e' is not defined
>>> 

"""
What might first be understood as a scoping improvement in python3 was 
actually a side effect of adding traceback references to exceptions, and 
yields this funky variable name deletion issue. It's all to avoid memory leaks 
(e.g., when you catch an exception at the module level)
"""