Question about asserting an UI Element's existance

[Emir Özer]

Hey Appium PPL :)

First of all i would like to thank you for this awesome framework.

Let me get to the chase, here's my question: An example from the test scripts provided with Appium : 

# there is nav bar inside the app

nav_bar = self.driver.find_element_by_class_name("UIANavigationBar") self.assertTrue(nav_bar)

My question is that in this specific part, and parts like these in everyone's scripts, where we have to know if that element exists or not, 

is it really necessary to assert the element at all ? Isn't the find_element an assertion in the first place ?

I mean for this specific case if the interpreter moves to the self.assertTrue line doesn't that mean that the element already exists ?

Thanks in advance,

Emir

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