On Ubuntu 16.04, with Python 2.7, performance impact is non-trivial

[anandr165]

Without adding hook to my module (tgv):

Traceback (most recent call last):
File "./tgv.py", line 618, in
if name == "main": tgv()
File "./tgv.py", line 426, in tgv
1/0
ZeroDivisionError: integer division or modulo by zero

real 0m2.904s
user 0m2.344s
sys 0m0.536s

With hook added

Traceback (most recent call last):
File "./tgv.py", line 618, in
if name == "main": tgv()
<6 variables printed>
File "./tgv.py", line 426, in tgv
1/0
<20 odd variables>
ZeroDivisionError: integer division or modulo by zero

real 0m30.856s
user 0m29.192s
sys 0m1.572s

I'm guessing mostly the perf degradation is due to the high count of variables being printed.
Anyway to control the output?

[Stavros Korokithakis]

Hmm, does it really print that many variables? The goal is to print enough to be relevant, not to inundate the user. Can you post a sample of the output?

[anandr165]

Sorry I cant print the details but more than half the variables are lists & dictionaries of nearly 100,000 entries of small strings.

[Alex Hall]

To improve the performance of printing large variables, I suggest https://github.com/alexmojaki/cheap_repr