Another cool NetBeans theme

I really like a dark background in my IDE. I previously mentioned the Aloha theme for NetBeans. I've been using if for a while.

Yesterday I found a version of Twilight for NetBeans. This one is set up for PHP, but works pretty well for Python. It is tweakable of course too.

Gql and object inheritance

I am working on an AppEngine project using the Kay Framework.

I was testing my queries in Kay Framework's shell. If you are familiar with Django's shell it is essentially the same.

Running the following query :

query = db.GqlQuery("select * from MyUserObject where user_name = :1 and password = :2")

I got this error :

raise KindError('No implementation for kind \'%s\'' % kind)

I had imported the object. My object inherits from the framework's DatatstoreUser.

Apparently the ORM sometimes struggles with inherited classes in different packages.

Changing to the following :

query = MyUserObject.gql("where user_name = :1", "testuser@testuser.com")

provided exactly what I needed.

Where is the site-packages directory on Mac OSX?

/Library/Python/2.5/site-packages

Running :

 python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"

As suggested in the Django documentation displays the directory.

Google AppEngine

New Google AppEngine!

Sweet, couldn't wait to use it. I started the tutorial during lunch. I downloaded and installed Python and the AppEngine. Then I created a work directory, "C:\google_workspace" and a helloworld folder, "C:\google_workspace\helloworld" just like the tutorial said to do, created the files "helloworld.py" and "app.yaml" just like in the tutorial, and fired up the dev_appserver with, "C:\google_workspace\helloworld>dev_appserver.py helloworld\". Instead of "Hello, world!" I got :

C:\google_workspace\helloworld>dev_appserver.py helloworld/
Traceback (most recent call last):
File "C:\Program Files\Google\google_appengine\dev_appserver.py", line 50, in
<module>
execfile(script_path, globals())
File "C:\Program Files\Google\google_appengine\google/appengine/tools/dev_apps
erver_main.py", line 338, in <module>
sys.exit(main(sys.argv))
File "C:\Program Files\Google\google_appengine\google/appengine/tools/dev_apps
erver_main.py", line 287, in main
config, matcher = dev_appserver.LoadAppConfig(root_path, {})
File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_apps
erver.py", line 2415, in LoadAppConfig
raise AppConfigNotFoundError
google.appengine.tools.dev_appserver.AppConfigNotFoundError

Hmm. I ran through a mental checklist before diving into the code (I knew I was being lazy. I was also really looking forward to diving into the code, but I wanted to at least get the thing running first.)

• Perhaps I should've installed somewhere other than "C:\Program Files" I don't usually put anything in there.
• Apparently I had Tomcat running which would be blocking 80 (I usually set Tomcat to 80 and JBoss to 8080).

Neither of those made a difference. "I, d, ten, t" error - I was running the wrong file.

Running, "C:\google_workspace\helloworld>dev_appserver.py ./" started the server.

The first line was a prompt, "Allow dev_appserver to check for updates on startup? (Y/n):"
Naturally I said "Y", and I liked name of the config file which was conveniently printed out on the next line, "dev_appserver will check for updates on startup. To change this setting, edit C
:\Documents and Settings\jdavis/.appcfg_nag"

I saw "Hello, world!"

I can't wait to start using this. Now I can finally build a completely scalable side project to make myself rich without spending any money out of pocket! Actually, I can finally stop putting off learning Python.

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