Index out of bounds

[Chuan-170515]

user_num = 941, item_num = 1322
Traceback (most recent call last):
File "D:\code\LGRec\src\get_neighbor.py", line 54, in
user_embedding[i][j] = float(arr[j + 1])
IndexError: index 942 is out of bounds for axis 0 with size 942

I have reduced i, why is it still the same mistake?
Thank you for your answer.

[librahu]

Please carefully check the range of user (item) index in your data file.