Difference between Raise Try and Assert

python assert raise
Defneit picture Defneit · Oct 21, 2016 · Viewed 52.2k times · Source

I have been learning Python for a while and the raise function and assert are (what I realised is that both of them crash the app, unlike try - except) really similar and I can't see a situation where you would use raise or assert over try.

So, what is the difference between Raise, Try and Assert?

Answer

Michal Krzyz picture Michal Krzyz · Oct 21, 2016 
assert cond, "text"

is expanded to something like

if cond == False:
  raise AssertionError("text")

use assert because it is more readable.

Related questions

Best practice for Python assert

Is there a performance or code maintenance issue with using assert as part of the standard code instead of using it just for debugging purposes? Is assert x >= 0, 'x is less than zero' better or worse than if x &…

Read More
What is the use of "assert" in Python?

I have been reading some source code and in several places I have seen the usage of assert. What does it mean exactly? What is its usage?

Read More
How to check if an object is a list or tuple (but not string)?

This is what I normally do in order to ascertain that the input is a list/tuple - but not a str. Because many times I stumbled upon bugs where a function passes a str object by mistake, and the …

Read More