Xlsxwriter

Question

我正在尝试根据列名称定义需要应用于 excel 电子表格每一列的格式。

例如，如果列名是“count”，则需要使用“number_format”。如果列名是“sale_date”，则需要使用“date_format”。

number_format = workbook.add_format({'num_format': '0', 'font_size': 12})
date_format = workbook.add_format({'num_format': 'dd/mm/yyyy hh:mm:ss', 'font_size': 12})

在各列中使用以上两种格式如下图：

worksheet1.write('A1', 'count', number_format)
worksheet1.write('B1', 'sale_date', date_format)

我可以根据列名而不是按列标签定义格式来动态设置吗？谢谢

更新：

在 excel 电子表格中显示 header 列的循环

for data in title:
    worksheet.write(row, col, data, number_format)
    col += 1

Answer 1

Comment: date_format = workbook.add_format({'num_format': 'dd/mm/yy'}), shows the date column as unix number rather than a proper date.
Sample value shown is : 42668 instead of displaying "24-10-16".

这是由 Windows Excel 定义的默认行为。
阅读
文档：XlsxWriter Working with Dates and Time

Comment: ...that I could use the appropriate format based on column name (namely count, sale_date)

您可以使用 worksheet.set_column() 为整个列设置样式。
文档：XlsxWriter worksheet.set_column()

先决条件：列的顺序 Name/Style 必须与您的 table 同步。
例如。 count == 'A'、sale_date == 'B' 等等...

from collections import OrderedDict

_styles = OrderedDict([('count',number_format), ('sale_date', date_format), ('total', number_format), ('text', string_format)])

for col, key in enumerate(_styles):
    A1_notation = '{c}:{c}'.format(c=chr(col + 65))
    worksheet.set_column(A1_notation, None, _styles[key])
    print("worksheet.set_column('{}', None, {})".format(A1_notation, _styles[key]))

Output:

worksheet.set_column('A:A', None, number_format)
worksheet.set_column('B:B', None, date_format)
worksheet.set_column('C:C', None, number_format)
worksheet.set_column('D:D', None, string_format)

对于后续写入，您不需要分配 style，例如使用

worksheet.write('A1', 123)

将默认为 A:A number_format

Question: Could I make this dynamic based on the column name

您没有使用 "column name"，它被称为 Cell A1 Notation.
设置映射 dict，例如：

style_map = {'A': number_format, 'B':date_format}

Usage:
Note: This will only work with single letter, from A to Z

def write(A1_notation, value):
    worksheet1.write(A1_notation, value, style_map[A1_notation[0]])

对于行列表示法(0, 0)：

style_map = {'0': number_format, '1':date_format}

Usage:

def write(row, col, value):
    worksheet1.write(row, col, value, style_map[col])

from xlsxwriter.utility import xl_rowcol_to_cell

def write(A1_notation, value):
    worksheet1.write(A1_notation, value, style_map[xl_cell_to_rowcol(A1_notation)[1]])

Xlsxwriter - 根据列标签动态更改格式

Xlsxwriter - Dynamically change the formatting based on column label

python