I went through several attempts to install a django dev environment, and in the process I installed different versions of python from dmg and macports, uninstalled, etc. In the end, I uninstalled everything and then did:
`sudo port install py25-psycopg2`
which also installed postgresql81 and python25, then I did
'sudo port install postgresql81-server subversion'
after which I should be ready to go, but I am not.

When I run 'python manage.py runserver' in my django project directory, I get:
raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: dlopen(/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/psycopg2/_psycopg.so, 2): Library not loaded: /usr/local/pgsql/lib/libpq.4.dylib
  Referenced from: /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/psycopg2/_psycopg.so

 Using `sudo locate libpq.4.dylib` gives me:
/opt/local/lib/postgresql81/libpq.4.dylib
/opt/local/var/macports/software/postgresql81/8.1.10_0+darwin_8/opt/local/lib/postgresql81/libpq.4.dylib

I would rather have the system set up to rely on MacPorts so that I can update/ upgrade with ease. I did install psycopg2 from a dmg before starting over and installing through MacPorts, so I can only assume that the system is looking for the old psycopg2 and not finding the one installed by MacPorts.

I have not created anything yet, and this is only a dev environment I am trying to set up, so I would be happy to delete a lot of stuff and start from scratch again, but since I uninstalled everything and then reinstalled with MacPorts twice, I seem to be missing someone.

Please advice, and thank you.

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System Info:

MacBook Pro, Tiger

Results of `sudo port installed`:
The following ports are currently installed:
  apr @1.2.12_0 (active)
  apr-util @1.2.12_0 (active)
  bison @2.3_1 (active)
  db44 @4.4.20_1+darwin_8 (active)
  expat @2.0.1_0 (active)
  gawk @3.1.5_2 (active)
  gettext @0.17_2 (active)
  libiconv @1.12_0+darwin_8 (active)
  libxml2 @2.6.30_0 (active)
  libxslt @1.1.22_0 (active)
  m4 @1.4.10_1 (active)
  ncurses @5.6_0+darwin_8 (active)
  ncursesw @5.6_0+darwin_8 (active)
  neon @0.26.4_0 (active)
  openssl @0.9.8g_0 (active)
  postgresql81 @8.1.10_0+darwin_8 (active)
  postgresql81-server @8.1.10_0 (active)
  py25-psycopg2 @2.0.5.1_0 (active)
  python25 @2.5.1_4+darwin_8 (active)
  readline @ 5.2.007_0 (active)
  sqlite3 @3.5.4_0+darwin_8 (active)
  subversion @1.4.5_0 (active)
  zlib @1.2.3_1 (active)

--
Micheal Cooper
Miyazaki, Japan (GMT+9, no DST)