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Elementarer, unaufgelöster Import von my_app.views in Django (PyDev) - Python, Django, Eklipse, Pydev

Mein Projektbaum in home / DjangoProjects / django_bookmarks / env / django_bookmarks sieht folgendermaßen aus:

django_bookmarks/ #project
django_bookmarks/
__init__.py
settings.py
urls.py
wsgi.py
bookmarks/ #made with python manage.py startapp bookmarks
__init__.py
models.py
test.py
views.py
manage.py

In ../bookmarks/views haben:

from django.http import HTTPResponse

def main_page(request):
output = """
<html>
<head><title>%s</title></head>
<body>
<h1>%s</h1><p>%s</p>
</body>
</html>
""" % (
"Django Bookmarks",
"Welcome to Django Bookmarks",
"Where you can store and share bookmarks!"
)
return HttpResponse(output)

In ... / django_bookmarks / urls haben:

from django.conf.urls import patterns, include, url
from bookmarks.views import main_page # Unresolved import: main_page
# from bookmarks.views import * # Undefined variable: main_page in line below

...

urlpatterns = patterns("",
(r"^$", main_page)
)

BEARBEITEN:

In ../django_bookmarks/settings:

    # Django settings for django_bookmarks project.

DEBUG = True
TEMPLATE_DEBUG = DEBUG

ADMINS = (
# ("Your Name", "[email protected]"),
)

MANAGERS = ADMINS

DATABASES = {
"default": {
"ENGINE": "django.db.backends.sqlite3", # Add "postgresql_psycopg2", "mysql", "sqlite3" or "oracle".
"NAME": "/home/novak/DjangoProjects/django_bookmarks/env/django_bookmarks/django_bookmarks/sqlite.db",                      # Or path to database file if using sqlite3.
# The following settings are not used with sqlite3:
"USER": "",
"PASSWORD": "",
"HOST": "",                      # Empty for localhost through domain sockets or "127.0.0.1" for localhost through TCP.
"PORT": "",                      # Set to empty string for default.
}
}

# Hosts/domain names that are valid for this site; required if DEBUG is False
# See https://docs.djangoproject.com/en/1.5/ref/settings/#allowed-hosts
ALLOWED_HOSTS = []

# 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.
# In a Windows environment this must be set to 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

# If you set this to False, Django will not use timezone-aware datetimes.
USE_TZ = True

# Absolute filesystem path to the directory that will hold user-uploaded files.
# Example: "/var/www/example.com/media/"
MEDIA_ROOT = ""

# URL that handles the media served from MEDIA_ROOT. Make sure to use a
# trailing slash.
# Examples: "http://example.com/media/", "http://media.example.com/"
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: "/var/www/example.com/static/"
STATIC_ROOT = ""

# URL prefix for static files.
# Example: "http://example.com/static/", "http://static.example.com/"
STATIC_URL = "/static/"

# 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 = "0i_*)b7)hc0oy^7qyit47w%[email protected])k=7lho3)q5!mx+!"

# 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",
# Uncomment the next line for simple clickjacking protection:
# "django.middleware.clickjacking.XFrameOptionsMiddleware",
)

ROOT_URLCONF = "django_bookmarks.urls"

# Python dotted path to the WSGI application used by Django"s runserver.
WSGI_APPLICATION = "django_bookmarks.wsgi.application"

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 when DEBUG=False.
# 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,
"filters": {
"require_debug_false": {
"()": "django.utils.log.RequireDebugFalse"
}
},
"handlers": {
"mail_admins": {
"level": "ERROR",
"filters": ["require_debug_false"],
"class": "django.utils.log.AdminEmailHandler"
}
},
"loggers": {
"django.request": {
"handlers": ["mail_admins"],
"level": "ERROR",
"propagate": True,
},
}
}

In ../django_bookmarks/wsgi:

"""
WSGI config for django_bookmarks project.

This module contains the WSGI application used by Django"s development server
and any production WSGI deployments. It should expose a module-level variable
named ``application``. Django"s ``runserver`` and ``runfcgi`` commands discover
this application via the ``WSGI_APPLICATION`` setting.

Usually you will have the standard Django WSGI application here, but it also
might make sense to replace the whole Django WSGI application with a custom one
that later delegates to the Django one. For example, you could introduce WSGI
middleware here, or combine a Django application with an application of another
framework.

"""
import os

# We defer to a DJANGO_SETTINGS_MODULE already in the environment. This breaks
# if running multiple sites in the same mod_wsgi process. To fix this, use
# mod_wsgi daemon mode with each site in its own daemon process, or use
# os.environ["DJANGO_SETTINGS_MODULE"] = "django_bookmarks.settings"
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "django_bookmarks.settings")

# This application object is used by any WSGI server configured to use this
# file. This includes Django"s development server, if the WSGI_APPLICATION
# setting points here.
from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

# Apply WSGI middleware here.
# from helloworld.wsgi import HelloWorldApplication
# application = HelloWorldApplication(application)

Django Version ist 1.5.1. Wenn ich das Projekt (Strg + F11) ausführe, gibt es keinen Fehler in der Konsole, nur in-line Fehlermarkierungen im Eclipse-Texteditor. Eclipse startet anscheinend die vorherige Codeversion, die funktioniert, und im Browser zeigt diese vorherige Version diesen Fehler ignorierend an. Früher war derselbe Code gut (das ist Code aus dem Buch) und daher denke ich, dass einige Einstellungen in Eclipse oder etwas in der Art, wie ich dieses Projekt erstellt habe, problematisch sind. Ich wurde auf diesem Weg ein Projekt erstellt http://blog.bixly.com/post/25093181934/setting-up-eclipse-for-python-django-development

Ich habe hier gelesen, dass die Leute Probleme beim Importieren von Modulen hatten und meistens war es das Fehlen von drin.py im App-Verzeichnis oder ein Problem mit PYTHONPATH-Einstellungen. Was ich gelesen habe, hat mir nicht geholfen, mein Problem zu lösen.

* Ich bin ein Anfänger in Django und dies ist das erste Mal, dass ich Django schreibe. Dies ist ein Beispiel aus dem Buch "Learning Website Development mit Django", Ayman Hourieh.

Antworten:

1 für die Antwort № 1

Sie müssen den Python-Interpreter informieren, um ein Verzeichnis oben zu suchen.

Versuchen Sie einen relativen Pfadimport

from ..bookmarks.views import main_page

Das ".." sagt, ein Verzeichnis oben zu suchen, um das Lesezeichen-Paket zu finden.

Darf ich Ihnen ein robusteres Muster vorschlagen, um dies zu erreichen?

django_bookmarks/ #project
django_bookmarks/
__init__.py
settings.py
urls.py
wsgi.py
bookmarks/ #made with python manage.py startapp bookmarks
__init__.py
models.py
test.py
views.py
urls.py # ADD another urls.py to your bookmarks app
manage.py

In django_bookmarks / urls.py

from django.conf.urls import patterns, include, url
# from bookmarks.views import main_page # Remove this



# This directs Django to the urls.py within the bookmarks app
urlpatterns = patterns("",
(r"^$", include("bookmarks.urls"))
)

In Lesezeichen / urls.py

from django.conf.urls import patterns, include, url
from bookmarks import views



# This directs Django to the urls.py within the bookmarks app
urlpatterns = patterns("",
(r"^$", views.main_page)
# Now you can add more bookmark urls to match to bookmark views
)

Dieses Muster ist wartungsfreundlicher und erlaubt es allen Lesezeichen-URL-Mustern, in Lesezeichen / urls.py zu leben.


1 für die Antwort № 2

OK, sieht so aus, als hätte ich dieses Problem gelöst. Das Problem war, dass ich dieses Django-Projekt in Eclipse gemacht habe. Ich wurde Python benutzt virtualenv was eine kleine Umgebung mit sich bringt env/bin/python2.7 Dolmetscher und dieser Dolmetscher sollte seinausgewählt, wenn Sie den Projektdialog erstellen. Diese Python haben kein Django vorinstalliert (natürlich), Sie müssen es installieren, wenn Sie es wollen. Ich habe dieses Projekt in meiner erstellt env/ gemacht mit virtualenv aber lassen Sie die Interpreter-Einstellungen auf "Default", so dass PyDev den Python-Interpreter vom System nicht benutzte env/bin/python2.7 und konnte nicht gefunden werden env/django_bookmarks/bookmarks App auf seinem PYTHONPATH, die verursacht ImportError. Fazit ist eigentlich logisch, wenn Sie Django-Projekt in virtueller Umgebung machen, verwenden Sie den Python-Interpreter aus der virtuellen Umgebung. Danke Paul Renton für deine Zeit.