调试界面排错函数

from ZODB.POSException import POSKeyError 
def error_finder(folder, exception=POSKeyError, stop_on_first=None):
         """ start at the given folderish object.
              If stop_on_first is true, quit after one exception;
                   otherwise, keep going through the whole tree."""     
        for id, next_item in folder.objectItems():         
            try:             
                print id             
                next_item.getId()         
            except exception:             
                print `exception`, "in folder",             
                print  '/'.join(folder.getPhysicalPath()),                  
                print "at id:", id             
                if stop_on_first:                 
                    raise "done"   # hack to break out of recursion         
            else:             # no error, recurse if it's objectManagerish             
                if hasattr(next_item.aq_base, 'objectItems'):                 
                    error_finder(next_item, exception, stop_on_first)  
                    
error_finder(app.mysite, stop_on_first=True)