.vimrc configuration addition is incomplete

In Appendix A of the "How To Think Like A Computer Scientist" python book, you ask the reader to edit a .vimrc file, the text you ask them to put in the file is incorrect:

syntax enable
filetype indent on
set et
set sw=4
set smarttab
map :w\|!python %

it should actually look like this:

syntax enable
filetype indent on
set et
set sw=4
set smarttab
map <f2> :w\|!python %

with the "<f2>" between "map" and ":w\|!python %"
hope this helps a little for those who had problems and couldn't figure out why.

Cheers,
        Howie