For information: I created an actual .py file from the last example with 200 parens and got the following error message:

> python example.py
s_push: parser stack overflow
MemoryError

For consistency and greater clarity, I think that having messages such as

- SyntaxError: parser stack overflow (too many nested parenthesis)
- SyntaxError: parser stack overflow (too many statistically nested blocks)

and possibly others (too many arguments?), would be preferable, with
the possibility of simply having

- SyntaxError: parser stack overflow

if the exact cause cannot be identified at the parsing stage.