http://code.google.com/appengine/docs/python/tools/uploadingdata.html is not clearly understand. Where i should call the bulkloader.py or appcfg.py? Should i import the csv file to local Google App Engine SDK first? How to keep the upload and download data process in existing application for datastore synchronization?
                +1 
                A: 
                
                
              Set Up remote_api, the docs have instructions for both java and python and then run bulkloader.py locally :
bulkloader.py --dump --app_id=<app-id> --url=http://<appname>.appspot.com/remote_api --filename=<data-filename>
if you are using the java sdk, you will need to install the python sdk.
                  Iggy
                   2010-03-18 00:16:11
                
              run bulkloader.py locally means in the SDk interactive console (http://localhost:8080/_ah/admin/interactive), its first time to do so ...
                  Ivan Slaughter
                   2010-03-18 00:32:26
                That's right, open a command terminal and run the bulkloader script, if you are using the java sdk, you will need to install the python sdk.
                  Iggy
                   2010-03-18 15:10:12
                Thanks in advance Iggy. I'm using phyton SDK. The Console keep saying like this ...: Traceback (most recent call last):  File "C:\Program Files\Google\google_appengine\google\appengine\ext\admin\__init__.py", line 209, in post    compiled_code = compile(code, '<string>', 'exec')  File "<string>", line 1     bulkloader.py --dump --app_id=myapp --url=http://myapp.appspot.com/remote_api --filename=myapp                                                                ^ SyntaxError: invalid syntax
                  Ivan Slaughter
                   2010-03-18 18:01:51
                @Ivan No, run it from a command line, not from the SDK console.
                  Nick Johnson
                   2010-03-19 11:38:21
                Yeah Thx Iggy... i'm runing it on CMD (Command Prompt). All records successfully uploaded.
                  Ivan Slaughter
                   2010-03-23 07:20:18
                Thx to you also Nick ...
                  Ivan Slaughter
                   2010-03-23 20:05:37