1. Click on menu items:
   Help > Software Updates > Available Software (tab) > Add Site
2. Type:
   http://pydev.sourceforge.net/updates/
3. Click on [OK button]
4. Check the PyDev For Eclipse option:
   - + http://pydev.sourceforge.net/updates/
   - – + Pydev
   - – - + [X] PyDev For Eclipse
   
5. Click on [Install button] and Wait
6. Click on [Next button]
7. Click on “I accept the terms of the license agreement” option
8. Click on [Finish button] and wait
9. Click on [YES button] to restart Eclipse

Configuring the python interpreter:

1. Click on menu items:
   Window > Preferences
2. Open the nodes:
   - + Pydev
   - – + Interpreter – Python
3. Click on [New button]
4. Browse the python.exe application
   Windows default: C:\Python25\python.exe
   Linux default: /opt/bin/python2.5
   
5. Click on [OK button] to add the suggested folders to the pythonpath
6. Click on [Ok Button] to confirm

Creating a GoogleApp project:

1. Right-Click on Project Explorer
2. Choose:
   New > Other
3. Select “PyDev Project” option:
   - + Pydev
   – - + Pydev Project
4. Click on [Next button]
5. Type the project name:
   helloworld
6. Select the python 2.5 as target project type
7. Click on [Finish button]
8. adding the GoogleApp Engine libraries
   1. In the PyDev Package Explorer panel
   2. Right Click on your new project
   3. Select the Properties option
   4. Select the PyDev – PYTHONPATH item
   5. Click on [Add source folder button] of the External Source Folders panel
   6. Add each of the following folders:
      Windows default:
      1. C:\Program Files\Google\google_appengine\lib\django
      2. C:\Program Files\Google\google_appengine\lib\webob
      3. C:\Program Files\Google\google_appengine\lib\yaml
      4. C:\Program Files\Google\google_appengine\lib\
      5. C:\Program Files\Google\google_appengine\
         
   7. Click on [OK button] to confirm

Editing the application sources

1. In the PyDev Package Explorer panel
2. Right Click on your project
3. Select:
   new > file option
4. In the File name edit box type:
   app.yaml
5. Click on [Finish button]
6. In the source editor type the following text:
   

   application: helloworld
   version: 1
   runtime: python
   api_version: 1
   
   handlers:
   - url: /.*
     script: helloworld.py

7. In the PyDev Package Explorer panel
8. Right Click on your project
9. Select
   new > file option
10. In the File name edit box type:
    helloworld.py
11. Click on [Finish button]
12. In the source editor type the following text:
    

    print 'Content-Type: text/plain'
    print ''
    print 'Hello, world!'

Running the Application

1. Click on
   Run > Run Configurations
2. in the Main Tab:
   1. Select Python Run option and name your new configuration:
      type hello
   2. Click the Project [Browse button]
   3. Select the helloworld project and click [OK button]
   4. On the Main Module text box type:
      C:\Program Files\Google\google_appengine\dev_appserver.py
3. In the Arguments Tab:
   1. Type the following code into the Program Arguments:
      “${project_loc}”note: any supported dev_appserver.py argument line can be entered. You may for instance type:
      “${project_loc}”
      –port=9999
   2. Click on [Apply button]
      1. Click on [Run button]

References

• http://www.youtube.com/watch?v=e1dtyQ6wqzc
• http://code.google.com/appengine/articles/eclipse.html