[Tutor] How does len() compute length of a string in UTF-8, 16, and 32?

[boB Stepp]

py3: s = 'Hello!'
py3: len(s.encode("UTF-8"))
6
py3: len(s.encode("UTF-16"))
14
py3: len(s.encode("UTF-32"))
28

How is len() getting these values?  And I am sure it will turn out not
to be a coincidence that 2 * (6 + 1) = 14 and 4 * (6 + 1) = 28.  Hmm
...

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boB