error in Sentiment140_W2V_Pipeline.py label is 1 when used as str

[Sandy4321]

File "C:\Sander\my_code\sunny-side-up-master_mar7\src\Baseline\Word2Vec\Sentiment140_W2V_Pipeline.py", line 215, in
main(sys.argv[1:])
File "C:\Sander\my_code\sunny-side-up-master_mar7\src\Baseline\Word2Vec\Sentiment140_W2V_Pipeline.py", line 188, in main
model = train_d2v_model(all_data, epoch_num=10)
File "C:\Sander\my_code\sunny-side-up-master_mar7\src\Baseline\Word2Vec\Sentiment140_W2V_Pipeline.py", line 50, in train_d2v_model
ls = LabeledSentence(preprocess_tweet(sentence).split(), [label + '_%d' % neg_count])

TypeError: unsupported operand type(s) for +: 'int' and 'str'

seems to be
label is 1
when used as str
if label == 'pos':
for example
['qqq' + '_%d' % neg_count]
['qqq_0']

is ok