mailroom with dictionaries: remove reference to "letter"

[natasha-aleksandrova]

https://uwpce-pythoncert.github.io/ProgrammingInPython/exercises/mailroom/mailroom_with_dicts.html

confusing to students mention of letter (which used to be combined with files/letter feature)

Try to use a dict and the .format() method to produce the letter as one big template, rather than building up a big string that produces the letter in parts.

remove that requirement ?

[PythonCHB]

I think learning how to use ** with .format is still a good idea.

And I don't understand the confusion -- this isn't changing / adding an features, simply suggesting a way to use template, .format() and a dict to do the same thing.

But if you can think of a way to make it more clear, sure.

[natasha-aleksandrova]

the term "letter" isn't something that's a feature until later so the confusion is the terminology used -- "produce a letter" but we don't ask to produce a letter feature until later.

"send letters to all donors" menu option is added later on now.

[PythonCHB]

ahh -- good catch, I lost track of what's when. I'll try to update that soon.

Odd that I didn't have any students complain about this in my class ....