But what if we want it to
return more than just one character?
We can extract a larger part of
a string by specifying a set of indices.
This is called a slice.
When taking a slice from a string,
we specify where the slice
starts and where the slice ends.
So we provide two indices.
The first index is the beginning,
which is included in the output.
The second index is the end,
but it's not included in the final output.
Instead, Python stops
the slice at the element before the second index.
For example, if we wanted to take the letters E-L-L
from "HELLO,"
we would start the interval from the index 1,
but we'd end before the index 4.