If an object is passed as a parameter, extract its ID.

This allows things like:
   photos = client.photos.list()
   client.photos.delete(photos)

openphoto/__init__.py

@@ -1,4 +1,5 @@
-from openphoto_http import OpenPhotoHttp, OpenPhotoError, OpenPhotoDuplicateError
+from openphoto_http import OpenPhotoHttp
+from errors import *
 import api_photo
 import api_tag
 import api_album

openphoto/api_album.py

@@ -1,4 +1,4 @@
-from openphoto_http import OpenPhotoHttp, OpenPhotoError
+from errors import *
 from objects import Album
 
 class ApiAlbums:
@@ -21,6 +21,7 @@ class ApiAlbum:
 
     def delete(self, album, **kwds):
         """ Delete an album """
+        if not isinstance(album, Album):
             album = Album(self._client, {"id": album})
         album.delete(**kwds)
         
@@ -35,6 +36,7 @@ class ApiAlbum:
 
     def update(self, album, **kwds):
         """ Update an album """
+        if not isinstance(album, Album):
             album = Album(self._client, {"id": album})
         album.update(**kwds)
         # Don't return the album, since the API doesn't give us the modified album

openphoto/api_photo.py

@@ -1,6 +1,6 @@
 import base64
 
-from openphoto_http import OpenPhotoHttp, OpenPhotoError
+from errors import *
 from objects import Photo
 
 class ApiPhotos:
@@ -30,11 +30,13 @@ class ApiPhoto:
 
     def delete(self, photo, **kwds):
         """ Delete a photo """
+        if not isinstance(photo, Photo):
             photo = Photo(self._client, {"id": photo})
         photo.delete(**kwds)
 
     def edit(self, photo, **kwds):
         """ Returns an HTML form to edit a photo """
+        if not isinstance(photo, Photo):
             photo = Photo(self._client, {"id": photo})
         return photo.edit(**kwds)
 
@@ -49,6 +51,7 @@ class ApiPhoto:
         Update a photo with the specified parameters.
         Returns the updated photo object
         """
+        if not isinstance(photo, Photo):
             photo = Photo(self._client, {"id": photo})
         photo.update(**kwds)
         return photo
@@ -58,6 +61,7 @@ class ApiPhoto:
         Used to view the photo at a particular size. 
         Returns the requested photo object
         """
+        if not isinstance(photo, Photo):
             photo = Photo(self._client, {"id": photo})
         photo.view(**kwds)
         return photo
@@ -80,6 +84,7 @@ class ApiPhoto:
         Returns a dict containing the next and previous photo objects, 
         given a photo in the middle.
         """
+        if not isinstance(photo, Photo):
             photo = Photo(self._client, {"id": photo})
         return photo.next_previous(**kwds)
 

openphoto/api_tag.py

@@ -1,4 +1,4 @@
-from openphoto_http import OpenPhotoHttp, OpenPhotoError
+from errors import *
 from objects import Tag
 
 class ApiTags:
@@ -21,13 +21,13 @@ class ApiTag:
 
     def delete(self, tag, **kwds):
         """ Delete a tag """
+        if not isinstance(tag, Tag):
             tag = Tag(self._client, {"id": tag})
         tag.delete(**kwds)
 
     def update(self, tag, **kwds):
         """ Update a tag """
+        if not isinstance(tag, Tag):
             tag = Tag(self._client, {"id": tag})
         tag.update(**kwds)
         return tag
-
-

openphoto/errors.py

@@ -0,0 +1,12 @@
+class OpenPhotoError(Exception):
+    """ Indicates that an OpenPhoto operation failed """
+    pass
+
+class OpenPhotoDuplicateError(OpenPhotoError):
+    """ Indicates that an upload operation failed due to a duplicate photo """
+    pass
+
+class NotImplementedError(OpenPhotoError):
+    """ Indicates that the API function has not yet been coded - please help! """
+    pass
+

openphoto/objects.py

@@ -1,4 +1,4 @@
-from openphoto_http import OpenPhotoError, NotImplementedError
+from errors import *
 
 class OpenPhotoObject:
     """ Base object supporting the storage of custom fields as attributes """

openphoto/openphoto_http.py

@@ -7,17 +7,8 @@ try:
 except ImportError:
     import simplejson as json
 
-class OpenPhotoError(Exception):
-    """ Indicates that an OpenPhoto operation failed """
-    pass
-
-class OpenPhotoDuplicateError(OpenPhotoError):
-    """ Indicates that an upload operation failed due to a duplicate photo """
-    pass
-
-class NotImplementedError(OpenPhotoError):
-    """ Indicates that the API function has not yet been coded - please help! """
-    pass
+from objects import OpenPhotoObject
+from errors import *
 
 DUPLICATE_RESPONSE = {"code": 409,
                       "message": "This photo already exists"}
@@ -102,16 +93,30 @@ class OpenPhotoHttp:
         """ Converts Unicode/lists/booleans inside HTTP parameters """
         processed_params = {}
         for key, value in params.items():
+            # Extract IDs from objects
+            if isinstance(value, OpenPhotoObject):
+                value = value.id
+
             # Use UTF-8 encoding
             if isinstance(value, unicode):
                 value = value.encode('utf-8')
+
             # Handle lists
             if isinstance(value, list):
-                value = ",".join(value)
+                # Make a copy of the list, to avoid overwriting the original
+                new_list = list(value)
+                # Extract IDs from objects in the list
+                for i, item in enumerate(new_list):
+                    if isinstance(item, OpenPhotoObject):
+                        new_list[i] = item.id
+                # Convert list to string
+                value = ",".join(new_list)
+
             # Handle booleans
             if isinstance(value, bool):
                 value = 1 if value else 0
             processed_params[key] = value
+
         return processed_params
 
     @staticmethod