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    文件類型: .zip
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    發(fā)布日期: 2023-10-27
  • 語言: Python
  • 標簽: python??

資源簡介

Django是一個開放源代碼的Web應(yīng)用框架，由Python寫成。采用了MVC的軟件設(shè)計模式，即模型M，視圖V和控制器C。Django 框架的核心組件有： 1. 用于創(chuàng)建模型的對象關(guān)系映射 2. 為最終用戶設(shè)計的完美管理界面 3. 一流的 URL 設(shè)計 4. 設(shè)計者友好的模板語言 5. 緩存系統(tǒng)。 在Django中，控制器接受用戶輸入的部分由框架自行處理，所以 Django 里更關(guān)注的是模型（Model）、模板(Template)和視圖（Views），稱為 MTV模式。它們 各自的職責(zé)如下，Django 視圖不處理用戶輸入，而僅僅決定要展現(xiàn)哪些數(shù)據(jù)給用戶，而Django 模板 僅僅決定如何展現(xiàn)Django視圖指定的數(shù)據(jù)。或者說, Django將MVC中的視圖進一步分解為 Django視圖 和 Django模板兩個部分，分別決定 “展現(xiàn)哪些數(shù)據(jù)” 和 “如何展現(xiàn)”，使得Django的模板可以根據(jù)需要隨時替換，而不僅僅限制于內(nèi)置的模板。 至于MVC控制器部分，由Django框架的URLconf來實現(xiàn)。URLconf機制是使用正則表達式匹配URL，然后調(diào)用合適的Python函數(shù)。框架把控制層給封裝了，無非與數(shù)據(jù)交互這層都是數(shù)據(jù)庫表的讀,寫,刪除,更新的操作

資源截圖

代碼片段和文件信息 

#!/usr/bin/env?python
#?encoding:?utf-8
“““
datastore_cache.py

Created?by?Alkis?Evlogimenos?on?2009-04-19.
“““

import?itertools
import?logging
import?threading

from?google.appengine.api?import?memcache
from?google.appengine.api?import?apiproxy_stub_map
from?google.appengine.datastore?import?datastore_pb

“““Provides?a?shim?that?caches?datastore?Get?calls.

Example?code:

import?datastore_cache
datastore_cache.DatastoreCachingShim.Install（）
#?...
def?main（args）:
??util.run_wsgi_app（application）
??datastore_cache.DatastoreCachingShim.ResetCache（）
“““

class?APIProxyShim（object）:
??“““A?generic?shim?class?with?methods?to?install/uninstall?it.

??Subclasses?of?this?class?can?be?used?to?replace?the?real?stub?for?a?service
??intercepting?and?possibly?passing?on?calls?to?the?original?stub.
??“““
??SERVICE_NAME?=?None?#?To?be?overridden?by?subclasses
??_instance?=?None

??def?__init__（self?wrapped_stub）:
????“““Constructor.?Internal?use?only?-?see?Install（）.“““
????self._wrapped_stub?=?wrapped_stub

??def?CallWrappedStub（self?call?request?response）:
????“““Allows?subclasses?to?call?the?wrapped?stub.“““
????self._wrapped_stub.MakeSyncCall（self.SERVICE_NAME?call?request?response）

??def?MakeSyncCall（self?service?call?request?response）:
????assert?（service?==?self.SERVICE_NAME
????????????‘Got?service?name?“%s“?expected?“%s“‘
????????????%?（service?self.SERVICE_NAME））
????messages?=?[]
????assert?request.IsInitialized（messages）?messages
????method?=?getattr（self?‘_Dynamic_‘?+?call?None）
????if?method:
??????method（request?response）
????else:
??????self.CallWrappedStub（call?request?response）
????assert?response.IsInitialized（messages）?messages

??def?__getattr__（self?name）:
????“““Pass-through?to?the?wrapped?stub.“““
????return?getattr（self._wrapped_stub?name）

??@classmethod
??def?Install（cls）:
????“““Installs?the?shim.?Only?needs?to?be?run?once?at?import?time.

????Note?that?this?accesses?internal?members?of?APIProxyStubMap?so?may?break
????in?future.
????“““
????if?not?cls._instance:
??????wrapped_stub?=?apiproxy_stub_map.apiproxy.GetStub（cls.SERVICE_NAME）
??????assert?wrapped_stub?“No?service?‘%s‘?found?to?wrap.“?%?cls.SERVICE_NAME
??????cls._instance?=?cls（wrapped_stub）
??????stub_dict?=?apiproxy_stub_map.apiproxy._APIProxyStubMap__stub_map
??????stub_dict[cls.SERVICE_NAME]?=?cls._instance

??@classmethod
??def?Uninstall（cls）:
????“““Uninstalls?the?shim.

????Note?that?there‘s?no?need?to?uninstall?a?shim?after?each?request.?You?can
????install?it?once?at?import?time?and?leave?it?there?between?requests.
????“““
????if?cls._instance:
??????stub_dict?=?apiproxy_stub_map.apiproxy._APIProxyStubMap__stub_map
??????stub_dict[cls.SERVICE_NAME]?=?cls._instance._wrapped_stub
??????cls._instance?=?None

class?DatastoreCachingShim（APIProxyShim）:
??SERVICE_NAME?=?‘datastore_v3‘

??def?__init__（self?default_stub）:
????super（DatastoreCachingShim?self）.__init__（default_stub）
????self.local?=?threading.local（）
????self.local.to_delete?=?d

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-08-24?17:27??pLite\
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\
?????文件??????????57??2010-02-03?21:48??pLite\.hg\00changelog.i
?????文件????????9896??2010-02-03?22:36??pLite\.hg\dirstate
?????文件??????????23??2010-02-03?21:48??pLite\.hg\requires
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\
?????文件????????1169??2010-02-03?22:36??pLite\.hg\store\00changelog.i
?????文件????????6645??2010-02-03?22:36??pLite\.hg\store\00manifest.i
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\data\
?????文件?????????278??2010-02-03?22:36??pLite\.hg\store\data\app.yaml.i
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\data\appengine__django\
?????文件????????7359??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\____init____.py.i
?????文件????????8866??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\____init____.pyc.i
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\data\appengine__django\auth\
?????文件?????????580??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\auth\____init____.py.i
?????文件?????????664??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\auth\decorators.py.i
?????文件?????????682??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\auth\middleware.py.i
?????文件????????1938??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\auth\models.py.i
?????文件?????????974??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\auth\templatetags.py.i
?????文件?????????718??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\auth\tests.py.i
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\data\appengine__django\conf\
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\data\appengine__django\conf\app__template\
?????文件??????????64??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\conf\app__template\____init____.py.i
?????文件?????????156??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\conf\app__template\models.py.i
?????文件??????????91??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\conf\app__template\views.py.i
?????目錄???????????0??2017-08-24?17:27??pLite\.hg\store\data\appengine__django\db\
?????文件?????????572??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\db\____init____.py.i
?????文件?????????209??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\db\____init____.pyc.i
?????文件????????1782??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\db\base.py.i
?????文件????????2353??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\db\base.pyc.i
?????文件?????????734??2010-02-03?22:36??pLite\.hg\store\data\appengine__django\db\creation.py.i
............此處省略421個文件信息

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