Mise en place de la base de données

Bonjour
je suis novice pour django et l'environnement python
cet environnement de travail me plaie
je viens de suivre le tuto :http://docs.django-fr.org/intro/
tutorial01.html
et j'ai eu un problème lors de la mise en place de la base de donnée
j'ai voulu connecter avec postgressql 8.4
1-j'accede à setting.py et j'essaye de mettre les parametre
necessaire
puis je lance la commande comme indque le tuto :python manage.py
syncdb
pour créer les table sauf ca m'affiche une erreur

1-mon fichier setting.py aprés modification:
# Django settings for inbmi project.

DEBUG = True
TEMPLATE_DEBUG = DEBUG

ADMINS = (
# ('Your Name', 'your_email@example.com'),
)

MANAGERS = ADMINS

DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql', # Add
'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
'NAME': 'intrainbmi', # Or path to
database file if using sqlite3.
'USER': 'postgres', # Not used with
sqlite3.
'PASSWORD': 'admin', # Not used with sqlite3.
'HOST': '', # Set to empty string for
localhost. Not used with sqlite3.
'PORT': '5432', # Set to empty string for
default. Not used with sqlite3.
}
}

# Local time zone for this installation. Choices can be found here:
# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
# although not all choices may be available on all operating systems.
# On Unix systems, a value of None will cause Django to use the same
# timezone as the operating system.
# If running in a Windows environment this must be set to the same as
your
# system time zone.
TIME_ZONE = 'America/Chicago'

# Language code for this installation. All choices can be found here:
# http://www.i18nguy.com/unicode/language-identifiers.html
LANGUAGE_CODE = 'en-us'

SITE_ID = 1

# If you set this to False, Django will make some optimizations so as
not
# to load the internationalization machinery.
USE_I18N = True

# If you set this to False, Django will not format dates, numbers and
# calendars according to the current locale
USE_L10N = True

# Absolute filesystem path to the directory that will hold user-
uploaded files.
# Example: "/home/media/media.lawrence.com/media/"
MEDIA_ROOT = ''

# URL that handles the media served from MEDIA_ROOT. Make sure to use
a
# trailing slash.
# Examples: "http://media.lawrence.com/media/", "http://example.com/
media/"
MEDIA_URL = ''

# Absolute path to the directory static files should be collected to.
# Don't put anything in this directory yourself; store your static
files
# in apps' "static/" subdirectories and in STATICFILES_DIRS.
# Example: "/home/media/media.lawrence.com/static/"
STATIC_ROOT = ''

# URL prefix for static files.
# Example: "http://media.lawrence.com/static/"
STATIC_URL = '/static/'

# URL prefix for admin static files -- CSS, JavaScript and images.
# Make sure to use a trailing slash.
# Examples: "http://foo.com/static/admin/", "/static/admin/".
ADMIN_MEDIA_PREFIX = '/static/admin/'

# Additional locations of static files
STATICFILES_DIRS = (
# Put strings here, like "/home/html/static" or "C:/www/django/
static".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)

# List of finder classes that know how to find static files in
# various locations.
STATICFILES_FINDERS = (
'django.contrib.staticfiles.finders.FileSystemFinder',
'django.contrib.staticfiles.finders.AppDirectoriesFinder',
# 'django.contrib.staticfiles.finders.DefaultStorageFinder',
)

# Make this unique, and don't share it with anybody.
SECRET_KEY = 'w$#^b$a%x)ul-#78&dq1+_k$_^gx-&o^3em51_od4)ciwv8wqc'

# List of callables that know how to import templates from various
sources.
TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
# 'django.template.loaders.eggs.Loader',
)

MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
)

ROOT_URLCONF = 'inbmi.urls'

TEMPLATE_DIRS = (
# Put strings here, like "/home/html/django_templates" or "C:/www/
django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)

INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
# Uncomment the next line to enable the admin:
# 'django.contrib.admin',
# Uncomment the next line to enable admin documentation:
# 'django.contrib.admindocs',
)

# A sample logging configuration. The only tangible logging
# performed by this configuration is to send an email to
# the site admins on every HTTP 500 error.
# See http://docs.djangoproject.com/en/dev/topics/logging for
# more details on how to customize your logging configuration.
LOGGING = {
'version': 1,
'disable_existing_loggers': False,
'handlers': {
'mail_admins': {
'level': 'ERROR',
'class': 'django.utils.log.AdminEmailHandler'
}
},
'loggers': {
'django.request': {
'handlers': ['mail_admins'],
'level': 'ERROR',
'propagate': True,
},
}
}

2-l'erreur qui apparait

C:\inbmi>python manage.py syncdb

Traceback (most recent call last):
File "manage.py", line 14, in <module>
execute_manager(settings)
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\core\management\__init__.py", line 438, in
execute_manager
utility.execute()
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\core\management\__init__.py", line 379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\core\management\__init__.py", line 261, in fetch_command
klass = load_command_class(app_name, subcommand)
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\core\management\__init__.py", line 67, in
load_command_class
module = import_module('%s.management.commands.%s' % (app_name,
name))
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\utils\importlib.py", line 35, in import_module
__import__(name)
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\core\management\commands\syncdb.py", line 7, in <module>
from django.core.management.sql import custom_sql_for_model,
emit_post_sync_
signal
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\core\management\sql.py", line 6, in <module>
from django.db import models
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\db\__init__.py", line 78, in <module>
connection = connections[DEFAULT_DB_ALIAS]
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\db\utils.py", line 93, in __getitem__
backend = load_backend(db['ENGINE'])
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\db\utils.py", line 33, in load_backend
return import_module('.base', backend_name)
File "C:\Documents and Settings\mehdi\Application Data\Python
\Python26\site-pa
ckages\django\utils\importlib.py", line 35, in import_module
__import__(name)

merci de me repondre

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