It doesn't include much and is pretty small:

  powerbook.local 101> find webpy | xargs wc
      95     243    2326 webpy/experimental/pwt.py
     133     295    3662 webpy/experimental/untwisted.py
      27      65     419 webpy/README.tests
      17      42     460 webpy/setup.py
       0       0       0 webpy/test/__init__.py
       8      16     155 webpy/test/alltests.py
      90     188    2458 webpy/test/db.py
      10      27     275 webpy/test/doctests.py
      16      54     538 webpy/test/form.py
      58     149    1668 webpy/test/webtest.py
      81     213    2608 webpy/tools/_makedoc.py
     677    2170   22981 webpy/tools/markdown.py
      62     141    1307 webpy/web/__init__.py
      98     345    3364 webpy/web/cheetah.py
     724    2285   21731 webpy/web/db.py
     357    1116   12084 webpy/web/debugerror.py
     215     689    6742 webpy/web/form.py
     279     869    8368 webpy/web/http.py
     224     612    8548 webpy/web/httpserver.py
     169     479    4427 webpy/web/net.py
     153     621    5532 webpy/web/request.py
     895    2623   25482 webpy/web/template.py
     888    2560   24743 webpy/web/utils.py
     377    1188   10713 webpy/web/webapi.py
      54     155    1580 webpy/web/wsgi.py
    1019    3963   40392 webpy/web/wsgiserver/__init__.py
      25     225    1542 webpy/web/wsgiserver/LICENSE.txt
    6751   21333  214105 total