FAQ: Control Flow - Exception

This community-built FAQ covers the “Exception” exercise from the lesson “Control Flow”.

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FAQs on the exercise Exception

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I just wanted to ask if it is possible to explain how the computer would be able to identify whether something is valid (i.e. how does it know the address truly exists vs if the address is fake? same with email address). Is there a specific coding that we must implement in order to figure this out or is it mapped out separately somehow?



What is the primary difference between conditional structures and exception structures?


what is the difference between conditional and exception structures?

A conditional is a control flow construct such as,

if condition:

while condition:

whereas try..except is an error trap that first tries to execute some code, which if it fails to run (raises an exception) will first loop through the except block and if the error isn’t handled there it will halt the program with the raised exception.

>>> a = 100
>>> b = 0
>>> try:
    print (a / b)
except ZeroDivisionError:
   print ('Cannot divide by zero')

Cannot divide by zero
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