groupby(), islice() and starmap()
Let's figure out the iterators that do not terminate. i.e. groupby(), islice() and starmap().
We'll cover the following
groupby(iterable, key=None)
The groupby iterator will return consecutive keys and groups from
your iterable. This one is kind of hard to wrap our heads around without seeing an example.
So let’s take a look at one!
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