Move import by path to utils

embed_video/backends.py

@@ -3,15 +3,14 @@ import re
 import requests
 import json
 
-from importlib import import_module
 
 if sys.version_info >= (3, ):
     import urllib.parse as urlparse
 else:
     import urlparse
 
-from django.core.exceptions import ImproperlyConfigured
 
+from .utils import import_by_path
 from .settings import EMBED_VIDEO_BACKENDS
 
 
@@ -23,45 +22,9 @@ class UnknownIdException(Exception):
     pass
 
 
-def import_by_path(dotted_path, error_prefix=''):
-    """
-    Import a dotted module path and return the attribute/class designated by
-    the last name in the path. Raise ImproperlyConfigured if something goes
-    wrong.
-
-    .. warning::
-        .. deprecated:: Django 1.6
-
-        Function :py:func:`~django.utils.module_loading.import_by_path`) has
-        been added in Django 1.6.
-    """
-    try:
-        module_path, class_name = dotted_path.rsplit('.', 1)
-    except ValueError:
-        raise ImproperlyConfigured("%s%s doesn't look like a module path" % (
-            error_prefix, dotted_path))
-    try:
-        module = import_module(module_path)
-    except ImportError as e:
-        msg = '%sError importing module %s: "%s"' % (
-            error_prefix, module_path, e)
-        raise ImproperlyConfigured(msg)
-    try:
-        attr = getattr(module, class_name)
-    except AttributeError:
-        raise ImproperlyConfigured('%sModule "%s" does not define a "%s" \
-                                   attribute/class' %
-                                   (error_prefix, module_path, class_name))
-    return attr
-
-
 def detect_backend(url):
     """
     Detect the right backend for given URL.
-
-    .. todo::
-
-
     """
 
     for backend_name in EMBED_VIDEO_BACKENDS: