  (__doc__)
  
   zip.
 ,  .
  .qrc->.py  .ui->.py   .py->.pyc   .py,   .py    ( )  .

      ?
   (m_),   ,  QtGui.qApp,       ?
 , -,    -     . 
           ,
 gm.myclass or gm.myfunction -   .
   -  :      myfunciton, 
,        -  ,    .
      , -      .


     .   ,     .



  :   Decimal?  ,         ?


   -    . ..   . import gM -  .
    -  .


http://www.dbforums.com/database-concepts-design/1641734-data-record-versioning-how-implement.html
http://www.dbforums.com/database-concepts-design/1626726-database-concept-how-set-up-database-i-can-track-changes-item.html
http://stackoverflow.com/questions/323065/how-to-version-control-a-record-in-a-database 
