# Stop ignoring asserts when running in optimized mode

**URL:** <https://discuss.python.org/t/stop-ignoring-asserts-when-running-in-optimized-mode/13132>\
**Category:** Ideas\
**Created:** [January 13, 2022, 8:04pm UTC](https://discuss.python.org/t/stop-ignoring-asserts-when-running-in-optimized-mode/13132 "2022-01-13T20:04:27Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![tiran](https://sea2.discourse-cdn.com/flex002/user_avatar/discuss.python.org/tiran/32/48_2.png) [@tiran](https://discuss.python.org/u/tiran)\
**Post date:** [January 13, 2022, 8:32pm UTC](https://discuss.python.org/t/stop-ignoring-asserts-when-running-in-optimized-mode/13132/4 "2022-01-13T20:32:06Z")

</div>

`-O` also sets ` __debug__ ` to False. `if __debug__ :` blocks are then removed by the peephole optimizer.

---

_[View the full topic](https://discuss.python.org/t/stop-ignoring-asserts-when-running-in-optimized-mode/13132)._