assertions

Question

HI everyone, I am not quite sure, after a lesson on assertions, still what they are used for and why they are used. I am not sure how they work with other statements e.g.

print(0)
assert "h" != "w"
print(1)
assert False
print(2)
assert True
print(3)

as used in the lesson. I understand that they are used to catch errors. but after that am not sure what they do with that. Can someone answer all these questions I have, please, as well as talk through this example code?

Many thanks!

Answer 1

assert check if the statement is True. If its true it returns nothing, else it returns AssertionError

https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/ref_keyword_assert.asp

but to build solid code testing, Unit Testing module should be used

https://www.datacamp.com/community/tutorials/unit-testing-python

Answer 2

Ah, thank you!