Mam jakiś kod do analizowania wiadomości e-mail i znajdowania załączników, a następnie zapisywania ich w magazynie danych jako db.BlobProperties (może to zmienić na Blobstore później). Problem polega na tym, że gdy wysyłam plik tekstowy zakodowany w UTF8, generuje błąd.

Kod zasadniczo zapisuje plik i zwraca klucz, który jest konwertowany na łańcuch, a następnie przechowywany w nadrzędnej jednostce e-mail. Jak widać, dekoduję plik, a następnie zapisuję go jako obiekt typu blob. Wysłałem wiele załączników i ten kod działa na wszystko oprócz tekstu zakodowanego w Unicode. Czy jest lepszy sposób, aby to zrobić? Co mogę zrobić, aby obsługiwać załączniki tekstowe Unicode?

fragment kodu

    my_file = []
    my_list = []
    if hasattr(mail_message, 'attachments'):
        file_name = ""
        file_blob = ""
        for filename, filecontents in mail_message.attachments:
            file_name = filename
            file_blob = filecontents.decode()
            my_file.append(file_name)
            my_list.append(str(store_file(self, file_name, file_blob)))

store_file

def store_file(self, file_name, file_blob):
    new_file = myblob(file_name = file_name, 
                      file_blob = file_blob)
    return new_file.put()

Próbowałem użyćfile_blob = str(file_blob) w powyższym bezskutecznie. To po prostu łamie kod i plik nigdy nie zostaje zapisany.

log 1 pliku tekstowego Unicode

Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not unicode)
Traceback (most recent call last):
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1530, in __call__
    rv = self.router.dispatch(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/webapp/mail_handlers.py", line 65, in post
    self.receive(mail.InboundEmailMessage(self.request.body))
  File "/base/data/home/apps/s~ae-baseapp/1.359073377819595139/controllers/InboundHandler.py", line 51, in receive
    file_list.append(str(store_file(self, file_name, file_blob)))
  File "/base/data/home/apps/s~ae-baseapp/1.359073377819595139/models/MyModel.py", line 63, in store_file
    file_blob = file_blob)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 974, in __init__
    prop.__set__(self, value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 614, in __set__
    value = self.validate(value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 2780, in validate
    (self.name, self.data_type.__name__, err))
BadValueError: Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not unicode)

Log 2 usuwania filecontents.decode () i zastępowania go tylko katalogami.

Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not EncodedPayload)
Traceback (most recent call last):
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1530, in __call__
    rv = self.router.dispatch(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1278, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 1102, in __call__
    return handler.dispatch()
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 572, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.5.1/webapp2.py", line 570, in dispatch
    return method(*args, **kwargs)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/webapp/mail_handlers.py", line 65, in post
    self.receive(mail.InboundEmailMessage(self.request.body))
  File "/base/data/home/apps/s~ae-baseapp/1.359097282640216691/controllers/InboundHandler.py", line 57, in receive
    file_list.append(str(store_file(self, file_name, file_blob)))
  File "/base/data/home/apps/s~ae-baseapp/1.359097282640216691/models/MyModel.py", line 64, in store_file
    file_blob = file_blob)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 974, in __init__
    prop.__set__(self, value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 614, in __set__
    value = self.validate(value)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/db/__init__.py", line 2780, in validate
    (self.name, self.data_type.__name__, err))
BadValueError: Property file_blob must be convertible to a Blob instance (Blob() argument should be str instance, not EncodedPayload)