Generally, Use blobstore_handlers when uploading a blob file.
Also, There is another way. For example,
an application that is using the Flask,
You can be in the following way.
ALLOWED_EXTENSIONS = set ([ 'txt' , '...
Flask Pagination with Google App Engine NDB API's asyncronous operations.
Note: This implementation is basis.
Please give me feed back for to be more efficiency ideas.
from math import ceil
class Pagination ( object ):