parser.norm_parse(text) returns None for some sentences, hence parser.parse(text) crashes because is uses norm_parse internally.
The string "this is bad" falls into that category and cannot be parsed with norm_parse, but "this is very bad" works well.
parser.norm_parse(text)returnsNonefor some sentences, henceparser.parse(text)crashes because is usesnorm_parseinternally.The string
"this is bad"falls into that category and cannot be parsed withnorm_parse, but"this is very bad"works well.