[Tutor] Counting words [reference documentation on dictionaries]

[Danny Yoo]

>     occurences[word] = occurences.get(word,0)+1

Sean showed that this was equivalent to looking up the 'word' in
'occurences'.  If the 'word' actually isn't in there yet, it uses '0' as a
default value.

There's a little more detail about this here:

    http://www.python.org/doc/lib/typesmapping.html

though it is a bit sparse.  dict.get() is a pretty useful function, and is
there for our convenience.


Good luck to you!