Here's a blog post my teammate Wesley (also on this team) wrote: http://wesc.livejournal.com/1743.html
Sounds a bit like what is going on with your script. On Fri, Dec 11, 2009 at 6:46 PM, Dominik Steiner < [email protected]> wrote: > Thanks again Ikai for your help and fast reply. > > It might not help that I'm a Python newbie here, but still not able to get > this going with the code you sent me, still the error it gives me is > > File "exporter.py", line 26, in decodeIfNotNone > return utf8_string.decode("utf-8") > File > "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/encodings/utf_8.py", > line 16, in decode > return codecs.utf_8_decode(input, errors, True) > UnicodeEncodeError: 'ascii' codec can't encode character u'\xe1' in > position 7: ordinal not in range(128) > > My product exporter looks like this > > def decodeIfNotNone(utf8_string): > if utf8_string: > return utf8_string.decode("utf-8") > else: > return "" > > class ProductExporter(bulkloader.Exporter): > def __init__(self): > bulkloader.Exporter.__init__(self, 'Product', > [('name', decodeIfNotNone, None), > ('userId', str, None), > ('shop', decodeIfNotNone, None), > ('brand', decodeIfNotNone, None), > ('model', decodeIfNotNone, None), > ('contact', decodeIfNotNone, None), > ('imageId', str, None), > ('userNickName', decodeIfNotNone, > None), > ('price', str, None), > ('registeredDate', str, None), > ('validUntilDate', str, None), > ('ratingCount', str, None), > ('ratingTotal', str, None), > ('rating', str, None), > ('commentCount', str, None), > ('description', decodeIfNotNone, > None) > ]) > exporters = [ProductExporter] > > after reading this great article on unicode and python I also tried the > following > > http://boodebr.org/main/python/all-about-python-and-unicode > > return unicode(utf8_string, 'utf-8') > > but that gives me > > File "exporter.py", line 26, in decodeIfNotNone > return unicode(utf8_string, 'utf-8') > TypeError: decoding Unicode is not supported > > Again I'm stucked here, there seems to have been a similar issue with the > bulkuploader > > http://code.google.com/p/googleappengine/issues/detail?id=157 > > but not sure if that applies to my exporter issue here too? (besides that > it's already marked as fixed) > > Thanks for any further guidance you can give me > > Dominik > > That doesn't look like correct Python syntax to me. Lambda expressions are > limited to a single expression ( > http://docs.python.org/tutorial/controlflow.html). I am pretty sure that > just takes a callable, so you can do this: > > def decodeIfNotNone(utf8_string): > if utf8_string: > return utf8_string.decode("utf-8") > else: > return "" > > Then pass this callable as the second parameter to the method: > > ('brand', decodeIfNotNone, None), > > Let me know if this works for you. > > On Thu, Dec 10, 2009 at 5:40 PM, Dominik Steiner < > [email protected]> wrote: > >> Thanks Ikai again for the fast reply. >> ( >> I tried the following >> >> ('brand', lambda x: x.decode('utf-8'), ""), >> >> so changing the default value from None to "" but that didn't help >> >> Then tried the following >> >> ('brand', if x is not None: lambda x: x.decode('utf-8'), ""), >> >> but this threw a syntax error. >> >> Is there anyway to check that the value is not null in order to decode it? >> >> Thanks >> >> Dominik >> >> It's basically the equivalent of a Null Pointer exception. This syntax: >> >> lambda x: x.someMethod() >> >> Is an inline anonymous function call. If x is None as opposed to blank >> String, you will not be able to call methods on it. >> >> On Thu, Dec 10, 2009 at 1:45 PM, Dominik Steiner < >> [email protected]> wrote: >> >>> Thanks Ikai for the fast response, >>> >>> yes, some unicode characters might be the issue here as my data is in >>> Spanish. I tried your suggestion and now have an exporter.py that looks like >>> this >>> >>> from google.appengine.ext import db >>> >>> class Product(db.Model): >>> userId = db.StringProperty() >>> name = db.StringProperty() >>> shop = db.StringProperty() >>> brand = db.StringProperty() >>> model = db.StringProperty() >>> contact = db.StringProperty() >>> imageId = db.StringProperty() >>> userNickName = db.StringProperty() >>> price = db.FloatProperty() >>> registeredDate = db.DateProperty() >>> validUntilDate = db.DateProperty() >>> ratingCount = db.IntegerProperty() >>> ratingTotal = db.IntegerProperty() >>> rating = db.IntegerProperty() >>> commentCount = db.IntegerProperty() >>> description = db.TextProperty() >>> >>> from google.appengine.ext import db >>> from google.appengine.tools import bulkloader >>> >>> class ProductExporter(bulkloader.Exporter): >>> def __init__(self): >>> bulkloader.Exporter.__init__(self, 'Product', >>> [('name', lambda x: >>> x.decode('utf-8'), None), >>> ('userId', str, None), >>> ('shop', lambda x: >>> x.decode('utf-8'), None). >>> ('brand', lambda x: >>> x.decode('utf-8'), None), >>> ('model', lambda x: >>> x.decode('utf-8'), None), >>> ('contact', lambda x: >>> x.decode('utf-8'), None), >>> ('imageId', str, None), >>> ('userNickName', lambda x: >>> x.decode('utf-8'), None), >>> ('price', str, None), >>> ('registeredDate', str, None), >>> ('validUntilDate', str, None), >>> ('ratingCount', str, None), >>> ('ratingTotal', str, None), >>> ('rating', str, None), >>> ('commentCount', str, None), >>> ('description', lambda x: >>> x.decode('utf-8'), None) >>> ]) >>> exporters = [ProductExporter] >>> >>> >>> and I now get the following error (but at least it seems that it had been >>> downloading for a while before throwing that error) >>> >>> Traceback (most recent call last): >>> File "/usr/local/bin/appcfg.py", line 60, in <module> >>> run_file(__file__, globals()) >>> File "/usr/local/bin/appcfg.py", line 57, in run_file >>> execfile(script_path, globals_) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/appcfg.py", >>> line 2548, in <module> >>> main(sys.argv) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/appcfg.py", >>> line 2539, in main >>> result = AppCfgApp(argv).Run() >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/appcfg.py", >>> line 1640, in Run >>> self.action(self) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/appcfg.py", >>> line 2427, in __call__ >>> return method() >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/appcfg.py", >>> line 2293, in PerformDownload >>> run_fn(args) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/appcfg.py", >>> line 2215, in RunBulkloader >>> sys.exit(bulkloader.Run(arg_dict)) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 3894, in Run >>> return _PerformBulkload(arg_dict) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 3800, in _PerformBulkload >>> return_code = app.Run() >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 3158, in Run >>> self.progress_thread.WorkFinished() >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 2207, in WorkFinished >>> exporter.output_entities(self.result_db.AllEntities()) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 2788, in output_entities >>> for entity in entity_generator) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 2788, in <genexpr> >>> for entity in entity_generator) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 2769, in __SerializeEntity >>> encoding = self.__EncodeEntity(entity) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 2757, in __EncodeEntity >>> writer.writerow(self.__ExtractProperties(entity)) >>> File >>> "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", >>> line 2738, in __ExtractProperties >>> encoding.append(fn(entity[name])) >>> File "exporter.py", line 30, in <lambda> >>> ('brand', lambda x: x.decode('utf-8'), None), >>> AttributeError: 'NoneType' object has no attribute 'decode' >>> >>> Do you have any idea of what that could be? >>> >>> Thanks again for your help. >>> >>> Dominik >>> >>> Interesting. Do you have some unicode characters in any fields? There's >>> a snippet on the bulk loader page about how to handle these characters in >>> your Importer: >>> >>> http://code.google.com/appengine/docs/python/tools/uploadingdata.html >>> >>> import datetime >>> from google.appengine.ext import db >>> from google.appengine.tools import bulkloader >>> import models >>> >>> class AlbumLoader(bulkloader.Loader): >>> def __init__(self): >>> bulkloader.Loader.__init__(self, 'Album', >>> [('title', lambda x: >>> x.decode('utf-8')), >>> ('artist', lambda x: >>> x.decode('utf-8')), >>> ('publication_date', >>> lambda x: >>> datetime.datetime.strptime(x, '%m/%d/%Y').date()), >>> ('length_in_minutes', int) >>> ]) >>> >>> loaders = [AlbumLoader] >>> >>> Your error may be caused by UTF-8/ASCII incompatibilities, and this is >>> where I would start looking. >>> >>> On Wed, Dec 9, 2009 at 8:26 PM, Dominik Steiner < >>> [email protected]> wrote: >>> >>>> Hi Ikai, >>>> >>>> I followed the instructions in the cook book for the python uploader/ >>>> downloader in order to be able to download and backup the data of my >>>> java application. >>>> >>>> As already posted in the cook book article, I got the following >>>> situation: >>>> >>>> "I would love to be able to download data in order to backup the data >>>> of my application and I tried your steps. One thing that didn't work >>>> for me was the line >>>> >>>> appcfg.py --server=python.latest.appid.appspot.com download_data >>>> exporter --filename=data.csv --kind=Thing --config_file=exporter/ >>>> thing_exporter.py >>>> >>>> but had to write >>>> >>>> appcfg.py --server=python.latest.xelavos.appspot.com download_data -- >>>> filename=data.csv --kind=Thing --config_file=exporter/ >>>> thing_exporter.py path/to/my/pythondirectory >>>> >>>> Then after being able to launch the exporter i got the following error >>>> after a while of downloading >>>> >>>> .[INFO ] Product: No descending index on __key__, performing serial >>>> download >>>> ......................................... >>>> Traceback (most recent call last): >>>> File "/usr/local/bin/appcfg.py", line 60, in >>>> run_file(__file__, globals()) >>>> File "/usr/local/bin/appcfg.py", line 57, in run_file >>>> execfile(script_path, globals_) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/appcfg.py", line 2548, in >>>> main(sys.argv) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/appcfg.py", line 2539, in main >>>> result = AppCfgApp(argv).Run() >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/appcfg.py", line 1640, in Run >>>> self.action(self) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/appcfg.py", line 2427, in __call__ >>>> return method() >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/appcfg.py", line 2293, in PerformDownload >>>> run_fn(args) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/appcfg.py", line 2215, in RunBulkloader >>>> sys.exit(bulkloader.Run(arg_dict)) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 3894, in Run >>>> return _PerformBulkload(arg_dict) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 3800, in _PerformBulkload >>>> return_code = app.Run() >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 3158, in Run >>>> self.progress_thread.WorkFinished() >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 2207, in WorkFinished >>>> exporter.output_entities(self.result_db.AllEntities()) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 2788, in output_entities >>>> for entity in entity_generator) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 2788, in >>>> for entity in entity_generator) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 2769, in __SerializeEntity >>>> encoding = self.__EncodeEntity(entity) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 2757, in __EncodeEntity >>>> writer.writerow(self.__ExtractProperties(entity)) >>>> File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/ >>>> GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/ >>>> google/appengine/tools/bulkloader.py", line 2738, in >>>> __ExtractProperties >>>> encoding.append(fn(entity[name])) >>>> UnicodeEncodeError: 'ascii' codec can't encode character u'\xe1' in >>>> position 7: ordinal not in range(128) >>>> " >>>> >>>> Do you know what this error means and how i can fix it? >>>> >>>> Thanks for any help >>>> >>>> Dominik >>>> >>>> -- >>>> >>>> You received this message because you are subscribed to the Google >>>> Groups "Google App Engine for Java" group. >>>> To post to this group, send email to >>>> [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]<google-appengine-java%[email protected]> >>>> . >>>> For more options, visit this group at >>>> http://groups.google.com/group/google-appengine-java?hl=en. >>>> >>>> >>>> >>> >>> >>> -- >>> Ikai Lan >>> Developer Programs Engineer, Google App Engine >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Google App Engine for Java" group. >>> To post to this group, send email to >>> [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> For more options, visit this group at >>> http://groups.google.com/group/google-appengine-java?hl=en. >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Google App Engine for Java" group. >>> To post to this group, send email to >>> [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]<google-appengine-java%[email protected]> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/google-appengine-java?hl=en. >>> >> >> >> >> -- >> Ikai Lan >> Developer Programs Engineer, Google App Engine >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine for Java" group. >> To post to this group, send email to >> [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine for Java" group. >> To post to this group, send email to >> [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<google-appengine-java%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> > > > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- Ikai Lan Developer Programs Engineer, Google App Engine -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
