经过 5 个多月的开发，web2py 发布了 2.0.2 版本。
web2py 是一个为Python语言提供的全功能Web应用框架，只在敏捷快速的开发Web应用，具有快速、安全以及可移植的数据库驱动的应用，兼容 Google App Engine。
详细的改进记录包括
### DAL Improvements
- Support for DAL(lazy_tables=True) and db.define_table(on_define=lambda table:), thanks Jonathan
- db(...).select(cacheable=True) make select 30% faster
- db(...).select(cache=(cache.ram,3600)) now caches parsed data 100x faster
- db(...).count(cache=(cache.ram,3600)) now supported
- MongoDB support in DAL (experimental), thanks Mark Breedveld
- geodal and spatialite, thanks Denes and Fran (experimental)
- db.mytable._before_insert, _after_insert, _before_update, _after_update, _before_delete. _after_delete (list of callbacks)
- db(...).update_naive(...) same as update but ignores table._before_update and table._after_update
- DAL BIGINT support and DAL(...,bigint_id=True)
- IS_IN_DB(..., distinct=True)
- new syntax: db.mytable.insert(myuploadfield=open(....)), thank you Iceberg
- db(...).select(db.mytable.myfield.count(distinct=True))
- db(db.a)._update(name=db(db.b.a==db.a.id).nested_select(db.b.id))
- db.mytable.myfield.filter_in, filter_out
- db.mytable._enable_record_versioning(db) adds versioning to this table
- teradata adapter, thanks Andrew Willimott
- experimental Sybase Adapter
- added db.table.field.avg()
- Support for Google App Engine projections, thanks Christian
- Field(... 'upload', default=path) now accepts a path to a local file as default value, if user does not upload a file. Relative path looks inside current application folder, thanks Marin
- executesql(...,fields=,columns=) allows parsing of results in Rows, thanks Anthony
### Auth improvements
- auth.enable_record_versioning(db) adds full versioning to all tables
- @auth.requires_login(otherwise=URL(...))
- auth supports salt and compatible with third party data, thanks Dave Stoll
- CRYPT now defaults to pbkdf2(1000,20,sha1)
- Built-in wiki with menu, tags, search, media, permissions. def index: return auth.wiki()
- auth.settings.everybody_group_id
- allow storage of uploads on any PyFileSystem (including amazon)
### Form improvements
- FORM.confirm('Are you sure?',{'Back':URL(...)})
- SQLFORM.smartdictform(dict)
- form.add_button(value,link)
- SQLFORM.grid(groupby='...')
- fixed security issue with SQLFORM.grid and SQLFORM.smartgrid
- more export options in SQLFORM.grid and SQLFORM.smartgrid (html, xml, csv, ...)
### Admin improvements
- new admin pages: manage_students, bulk_regsiter, and progress reports
- increased security in admin against CSRF
- experimental Git integration
- experimental OpenShift deployment
- multi-language pluralization engine
- ace text web editor in admin
- Ukrainian translations, thanks Vladyslav Kozlovskyy
- Romanian translation for welcome, thanks ionel
- support for mercurial 2.6, thanks Vlad
### Scheduler Improvements (thanks to niphlod, ykessler, dhx, toomim)
- web2py.py -K myapp -X starts the myapp scheduler alongside the webserver
- tasks are marked EXPIRED (if stop_time passed)
- functions with no result don't end up in scheduler_run
- more options: web2py.py -E -b -L
- scheduler can now handle 10k tasks with 20 concurrent workers and with no issues
- new params:
tasks can be found in the environment (no need to define the tasks parameter)
max_empty_runs kills the workers automatically if no new tasks are found in queue (nice for "spikes" of processing power)
discard_results to completely discard the results (if you don't need the output of the task)
utc_time enables datetime calculations with UTC time
- scheduler_task changes:
task_name is no longer required (filled automatically with function_name if found empty)
uuid makes easy to coordinate scheduler_task maintenance (filled automatically if not provided)
stop_time has no default (previously was today+1)
retry_failed to requeue automatically failed tasks
sync_output refreshes automatically the output (nice to report percentages)
- workers can be:
DISABLED (put to sleep and do nothing if not sending the heartbeat every 30 seconds)
TERMINATE (complete the current task and then die)
KILL (kill ASAP)
### Other Improvements
- gluon/contrib/webclient.py makes it easy to create functional tests for app
- DIV(..).elements(...replace=...), thanks Anthony
- new layout based on Twitter Bootstrap
- New generic views: generic.ics (Mac Mail Calendar) and generic.map (Google Maps)
- request.args(0,default=0, cast=int, otherwise=URL(...)), thanks Anthony
- redirect(...,type='auto') will be handled properly in ajax responses
- routes in can redirect outside with routes_in=[('/path','303->http://..')]
- better memcache support
- improved spreadsheet, thanks Alan
- new internationalization engine, thanks Vladyslav
- pluralization engine, thanks Vladyslav
- new markmin with support for nested lists, , , autolinks, thanks Vladyslav
- new syntax: {{=BR()*5}}
- gluon.cache.lazy_cache decorator allows caching functions in modules
- .coffee and .less support in response.files, thanks Sam Sheftel
- ldap certificate support
- pg8000 postgresql driver support (experimental)
- @cache('%(name)s%(args)s%(vars)s',5) and cache.autokey
- added tox.ini, thanks Marc
- web2py.py --run_system_tests, thanks Marc Abramowitz
- html.py (and web2py helpers) can be used without web2py dependencies
- new fpdf, thanks Mariano
主页：http://www.web2py.com/
下载：http://www.web2py.com/examples/default/download
来自:开源中国社区
