MobileRead Forums - View Single Post - weirdness while accessing metadata in plugin

kovidgoyal · 10-21-2013, 11:58 AM

If you want to check whether a particular field has a value for a mi object, use mi.is_null(filed_name), with that caveat that this will return True for numeric fields having the value zero as well. Dont use hasattr/getattr and friends.

10-21-2013, 11:58 AM	#4
kovidgoyal creator of calibre Posts: 45,450 Karma: 27757438 Join Date: Oct 2006 Location: Mumbai, India Device: Various	If you want to check whether a particular field has a value for a mi object, use mi.is_null(filed_name), with that caveat that this will return True for numeric fields having the value zero as well. Dont use hasattr/getattr and friends.