Python 101 : Using the "next()" function to exit a loop - reading from a file -

We use the StopIteration error in order to end an iteration as below:

Sometimes we want to instruct the next() method to return a value that would tell us to end the iteration.

An example of these value is the "None" value, as we can see below: 

The next() function will add the "None" when it reaches the end of the file, so we can break out of the loop.


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