l3.py getting error

[maanich]

py l3.py
/usr/bin/py:16: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working
from collections import Iterable
Traceback (most recent call last):
File "/usr/bin/py", line 167, in
result = eval(args.expression)
File "", line 1, in
l3.py
NameError: name 'l3' is not defined