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python Programming Glossary: entity

How do I define a unique property for a Model in Google App Engine?

http://stackoverflow.com/questions/1185628/how-do-i-define-a-unique-property-for-a-model-in-google-app-engine

keys_only True .filter 'unique_property' value_to_be_used entity query.get if entity raise Exception 'unique_property must have.. 'unique_property' value_to_be_used entity query.get if entity raise Exception 'unique_property must have a unique value '.. the performance slightly by not fetching the data for the entity. A more efficient method would be to use a separate model with..

Python: Why is (“hello” is “hello”)?

http://stackoverflow.com/questions/1392433/python-why-is-hello-is-hello

been put to same memory location. A string is an immutable entity. No harm can be done. So there is one and only one place in.. Sounds pretty strange. What's going on here python identity share improve this question Python like Java C C .NET uses..

Add scrolling to a platformer in pygame

http://stackoverflow.com/questions/14354171/add-scrolling-to-a-platformer-in-pygame

function. This is where we re calculate the position of an entity on the screen to apply the scrolling. Once per iteration of.. platforms for e in entities # apply the offset to each entity. # call this for everything that should scroll # which is basically.. simple approach is to just center the player or whichever entity we want to follow at the screen and the implementation is straight..

What are “first class” objects? [closed]

http://stackoverflow.com/questions/245192/what-are-first-class-objects

the same as any other object. A first class object is an entity that can be dynamically created destroyed passed to a function.. being storable in data structures having an intrinsic identity independent of any given name being comparable for equality..

Fetching a random record from the Google App Engine Datastore?

http://stackoverflow.com/questions/3002999/fetching-a-random-record-from-the-google-app-engine-datastore

gae datastore share improve this question Assign each entity a random number and store it in the entity. Then query for ten.. Assign each entity a random number and store it in the entity. Then query for ten records whose random number is greater than..

How to get something random in datastore (AppEngine)?

http://stackoverflow.com/questions/3450926/how-to-get-something-random-in-datastore-appengine

the same time without causing a conflict. To get a random entity you can attach a random float between 0 and 1 to each entity.. you can attach a random float between 0 and 1 to each entity on create. Then to query do something like this rand_num random.random.. to query do something like this rand_num random.random entity MyModel.all .order 'rand_num' .filter 'rand_num ' rand_num .get..

How to implement “autoincrement” on Google AppEngine

http://stackoverflow.com/questions/3985812/how-to-implement-autoincrement-on-google-appengine

numbers with no gaps you'll need to use a single entity which you update in a transaction to 'consume' each new number...

Best way to create a simple python web service [closed]

http://stackoverflow.com/questions/415192/best-way-to-create-a-simple-python-web-service

request and response objects HTTP utilities to handle entity tags cache control headers HTTP dates cookie handling file uploads..

Convert XML/HTML Entities into Unicode String in Python

http://stackoverflow.com/questions/57708/convert-xml-html-entities-into-unicode-string-in-python

represented as the 16 bit 01ce. I want to convert the html entity into the value u' u01ce' python html entities share improve.. share improve this question Python has the htmlentitydefs module but this doesn't include a function to unescape HTML..

Polymorphism in Django

http://stackoverflow.com/questions/1397537/polymorphism-in-django

unicode of the inheriting tables Team and Athete from the Entity table I'm trying to display a list of all the Entities that.. if Team and 'firstname' and 'lastname' if Athlete. class Entity models.Model entity_type_list 'T' 'Team' 'A' 'Athlete' type.. False max_length 255 null True blank True class Team Entity name models.CharField max_length 100 def __unicode__ self return..

Add scrolling to a platformer in pygame

http://stackoverflow.com/questions/14354171/add-scrolling-to-a-platformer-in-pygame

platforms entities.draw screen pygame.display.update class Entity pygame.sprite.Sprite def __init__ self pygame.sprite.Sprite.__init__.. self pygame.sprite.Sprite.__init__ self class Player Entity def __init__ self x y Entity.__init__ self self.xvel 0 self.yvel.. self class Player Entity def __init__ self x y Entity.__init__ self self.xvel 0 self.yvel 0 self.onGround False self.image..

Are any of these quad-tree libraries any good?

http://stackoverflow.com/questions/2298517/are-any-of-these-quad-tree-libraries-any-good

find useful for path finding techniques in Python. Game Entity Navigation Catch the Cootie python performance quadtree share..

Django model group by datetime's date

http://stackoverflow.com/questions/3388559/django-model-group-by-datetimes-date

by datetime's date Hello Assume I have a such model class Entity models.Model start_time models.DateTimeField I want to regroup.. itertools.groupby from itertools import groupby entities Entity.objects.order_by 'start_time' for start_date group in groupby.. list group Or if you really want a list of lists entities Entity.objects.order_by 'start_time' list_of_lists list g for t g in..

App Engine Bulk Loader Performance

http://stackoverflow.com/questions/3670941/app-engine-bulk-loader-performance

To convert this neutral python dictionary to a datastore Entity i use a custom post import function that i have defined in my..

python circular imports once again (aka what's wrong with this design)

http://stackoverflow.com/questions/3955790/python-circular-imports-once-again-aka-whats-wrong-with-this-design

that every class is in different file # ENTITY class Entity _id None _defs _data None def __init__ self kwargs self._id.. self name return self._data name # USERS class User Entity _defs 'team' Team class DPLUser User _defs 'team' DPLTeam class.. class ErlangUser FunctionalUser pass # TEAMS class Team Entity _defs 'leader' User class DPLTeam Team _defs 'leader' DPLUser..

Can't get Python to import from a different folder

http://stackoverflow.com/questions/456481/cant-get-python-to-import-from-a-different-folder

u user.User #error on this line And user.py class User Entity using_options tablename 'users' username Field String 15 password..

HTML Entity Codes to Text

http://stackoverflow.com/questions/663058/html-entity-codes-to-text

Entity Codes to Text Does anyone know an easy way in Python to convert..

Convert HTML entities to Unicode and vice versa

http://stackoverflow.com/questions/701704/convert-html-entities-to-unicode-and-vice-versa

XML HTML Entities into Unicode String in Python HTML Entity Codes to Text How do you convert HTML entities to Unicode and..

Django dynamic model fields

http://stackoverflow.com/questions/7933596/django-dynamic-model-fields

but has some thriving forks This solution is based on Entity Attribute Value data model essentially it uses several tables..