What is the use of “assert” in Python?

Question

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?

Answer 1

assert is similar to throwing an exception if a given condition isn't true. An important difference is that assert statements get ignored if you compile your code with the optimization option.

To know more about this you can have a look at the following video tutorial:-