Consistency: use 'project' everywhere, rather than 'project_id'.

docs/pubsub-usage.rst

@@ -8,7 +8,7 @@ Connection / Authorization
 
   - credentials (derived from GAE / GCE environ if present).
 
-  - ``project_id`` (derived from GAE / GCE environ if present).
+  - ``project`` (derived from GAE / GCE environ if present).
 
   - ``scopes``
 
@@ -29,7 +29,7 @@ Create a new topic for an explicit project:
 .. doctest::
 
    >>> from gcloud.pubsub import Topic
-   >>> topic = Topic('topic_name', project_id='my.project')
+   >>> topic = Topic('topic_name', project='my.project')
    >>> topic.create()  # API request
 
 Check for the existance of a topic:
@@ -54,7 +54,7 @@ List topics for an explicit project:
 .. doctest::
 
    >>> from gcloud.pubsub import list_topics
-   >>> topics = list_topics(project_id='my.project')  # API request
+   >>> topics = list_topics(project='my.project')  # API request
    >>> [topic.name for topic in topics]
    ['topic_name']
 

gcloud/test__helpers.py

@@ -340,13 +340,13 @@ def close(self):
 
 class _HTTPConnection(_BaseHTTPConnection):
 
-    def __init__(self, status, project_id):
+    def __init__(self, status, project):
         super(_HTTPConnection, self).__init__()
         self.status = status
-        self.project_id = project_id
+        self.project = project
 
     def getresponse(self):
-        return _HTTPResponse(self.status, self.project_id)
+        return _HTTPResponse(self.status, self.project)
 
 
 class _TimeoutHTTPConnection(_BaseHTTPConnection):

regression/pubsub.py

@@ -57,10 +57,10 @@ def test_list_topics(self):
 
         # Retrieve the topics.
         all_topics, _ = pubsub.list_topics()
-        project_id = pubsub.get_default_project()
+        project = pubsub.get_default_project()
         created = [topic for topic in all_topics
                    if topic.name in topics_to_create and
-                   topic.project == project_id]
+                   topic.project == project]
         self.assertEqual(len(created), len(topics_to_create))
 
     def test_create_subscription(self):