Need to copy column of cell values from one workbook to another with openpyxl

[curranjohn46]

Thanks I saw that article but it didn't use iter_rows and iter_cols, which I was determined to use. Anyway, I figured out this solution:

for x, rows in enumerate(DateColumnA):
    ws3.cell(row=x+1, column=1).value = rows
    #print(rows)
    wb3.save('C:\\folder\\output.xlsx')

Works great but now I need to determine how to write the data to output.xlsx starting at row 16 instead of row 1 so I don't overwrite the first 16 existing header rows in output.xlsx. Any ideas appreciated.