def getRowUnit(sudoku, i):
    """
    Finds a cell's peers in the row that it is in.
    Peers are the other numbers in the puzzle.

    Input
        sudoku : 9x9 numpy array of integers.
        i: row index of cell in the puzzle.

    Output
        temp_row : numpy list of the cell's peers in the specified row.
    """
    temp_row = []
    for y in range(0, 9):
        temp_row.append(sudoku[i][y])
    return temp_row