[AI_]

I generated my sqlite db above using flaminsarge's version straight off his Github page. The only change I had to do in tf2db.py was to add a null check for the item name at line 183 before the execute:

if i.get('item_name') is None:
    continue

dbc.execute('INSERT INTO new_tf2idb_item ' # ...

Alternatively, you can remove NOT NULL from the table definition on line 78:

dbc.execute('CREATE TABLE "new_tf2idb_item" ('
    '"id" INTEGER PRIMARY KEY NOT NULL,'
    '"name" TEXT NOT NULL,'
    '"item_name" TEXT,'   #  <---  Right here  
    '"class" TEXT NOT NULL,'
    '"slot" TEXT,'
    '"quality" TEXT NOT NULL,'
    '"tool_type" TEXT,'
    '"min_ilevel" INTEGER,'
    '"max_ilevel" INTEGER,'
    '"baseitem" INTEGER,'
    '"holiday_restriction" TEXT,'
    '"has_string_attribute" INTEGER,'
    '"propername" INTEGER'
    ')'
)