python openpyxl cell width

1from openpyxl.utils import get_column_letter
2
3column_widths = []
4for row in Workbook:
5    for i, cell in enumerate(row):
6        if len(column_widths) > i:
7            if len(cell) > column_widths[i]:
8                column_widths[i] = len(cell)
9        else:
10            column_widths += [len(cell)]
11
12for i, column_width in enumerate(column_widths):
13    worksheet.column_dimensions[get_column_letter(i+1)].width = column_width
14