padding value of 0 is the same as one of the movie IDs in movielens 1 million dataset

[n0obcoder]

For preparing a batch of processed sequences, padding is done here with a value of 0 (zero). But, 0 is also one of the movie IDs. The padding value should always be something that's not included in the input values.
Please correct me if I am wrong, or else help me with a justification of your code implementation.

Thanks in advance :)