core.js

core.chunk = function (array, chunkSize) {
    /// <summary>
    /// Splits a given array into separate arrays of the given chunkSize
    /// </summary>
    /// <param name="array" type="array"></param>
    /// <param name="chunkSize" type="number"></param>
    /// <returns type="array"></returns>
    var count = 1;
    var newArray = [];
    var limit = chunkSize;
    var tempArray = [];
    for (var i = 0; i < array.length ; i++) {
        if (i < limit) {
            tempArray.push(array[i]);
            if (i == array.length - 1) {
                newArray.push(tempArray);
                tempArray = [];
            }
        }
        else {
            newArray.push(tempArray);
            tempArray = [];
            tempArray.push(array[i]);
            count = count + 1;
            limit = chunkSize * (count);
        }
    }
    return newArray;
}

helpers.py

def chunk(list, n):
    # Split list into chunks of n size
    return [list[i:i+n] for i in range(0, len(list), n)]